Welcome to the world of ‘Touchless’ Smartphones!

Imagine interacting with your smartphone without even touching it. Imagine waving your hand or pointing your finger to perform tasks on your smartphone. Better still, imagine interacting with you smartphone using your eyes! If only you could change the music by waving your hand or feet or view photos by pointing at your smartphone. Wouldn’t it be cool if you could wave your hand over the smartphone to check the time? Sounds interesting, doesn’t it?

I was wondering if touchscreens on smartphones will eventually become ‘gesture-screens’ and whether all user interaction will be devoid of the ‘Touch’.  Is gesture-based user interaction the future for smartphones and tablets?

Actually, the future is already here! Gesture-based user-interaction was implemented in the Samsung Galaxy S5. There’s a lot more you can do with gestures than with just touch. You can use your eyes, head, hands, feet or any part of your body to navigate through your smartphone or tablet.

Let’s look at a few cool features of the Samsung Galaxy S5’s gesture-based user-interaction.

Air View

The Air view feature gives you a ‘Preview’ of the particular UI element by just hovering your finger over it. You must turn Air view on before previewing using gestures. Go to Settings > Motion and Gestures > Air view. Switch Air view On.


This feature allows you to preview photos, events, speed dial numbers, text messages etc.

Here are a few live examples of how Air view looks like on the Samsung Galaxy S5:

Previewing photos through Air view:


In the above photo, I am ‘Air viewing’ a particular photo in my album. Instead of navigating through all the photos, I just need to hover my finger on all photos one at a time for a quick preview. This feature is very useful and saves a lot of time in finding the right photo to upload or share.

Previewing text messages through Air view:


In the above image, I just hovered on a text message to view the message. I don’t really need to click and view the message. This is a convenient way to navigate through all text messages.

Air browse

Imaging being able to navigate through photos or music by just swiping your palm over the phone without even touching it! Air browse lets you do just that.

You must turn Air browse on before being able to browse using gestures. Go to Settings > Motion and Gestures > Air browse. Switch Air browse On.


This feature lets you change music even when the screen is locked. Just wave your hand on the screen and you can change tracks right away.

Air wake up

Generally, once a smartphone goes into sleep mode, the only way to wake it up is to click the power or home button (depending on the model of the smartphone). Samsung Galaxy S5 provides an awesome feature where you can hover your palm on the proximity sensor and it automatically wakes up the device.

You must turn Air wake up on before being able to wake up your smartphone using gestures. Go to Settings > Accessibility > Dexterity and interaction > Air wake up. Switch Air wake up On.


This feature is useful if your hands are wet or you don’t want to touch the phone at night but you want to quickly check the time. This is also a quick way to check updates within the widgets on your home screen.

Smart Scroll

Imaging being able to scroll through a web page by tilting the device or your head. Smart scroll does just that.

You must turn Smart scroll on before being able to scroll using gestures. Go to Settings > Accessibility > Dexterity and interaction > Smart Scroll. Switch Smart scroll On. You can either choose to navigate by tilting the device or tilting your head.


Smart Pause

I’m sure this has happened to you – you look away from the movie you are watching on your smartphone, and you miss the action! If only there was a way to pause the movie on your smartphone every time you looked away. Smart pause lets you do just that.

Samsung Galaxy S5 has a feature where the video pauses automatically when you look away! To enable Smart pause, go to Settings > Motion and Gestures > Mute/Pause. Switch Mute/Pause On. Select the Smart Pause check box.


These amazing features make me wonder whether Is it really the end of the ‘Touch’. It’ll be interesting to see how gesture-based user-interaction improves over the coming years. With cut-throat competition amongst smartphone companies, new ways of user-interaction will become unique selling features. It will be interesting to see who wins in the end. At the moment, I see only one winner – and it is you, the user. Because you can now use your smartphone without touching it!

Disclaimer: The Digital Dimension of Technology is an independent non-commercial technology blog. We have not been endorsed by Samsung or Google (Android). 

Is Your Printer ‘Cloud Ready’?

As the world goes mobile with smartphones and tablets, there’s still one thing that has not changed much in the recent times – the printer.

Setting up a printer to work with multiple devices usually involves installing multiple drivers on the devices. You may need to print from any one, or a combination of the following devices:

  • Windows computer
  • Mac computer
  • Linux computer
  • iOS devices
  • Android devices
  • Windows mobile devices
  • Blackberry devices

And when dealing with these devices, not only do you need different printer drivers for different operating systems, you also need to keep updating the drivers to the latest version.

When managing the apps or drivers for the your devices, you may face the following problems:

  • Drivers not updated on the device
  • Drivers not supported (for example, for Windows XP)
  • Drivers not available (for example, for Linux devices)

When you want to print an important file, you may run into many problems which can be very frustrating. Not to mention the fact that your computer needs to be physically connected to your printer, or at least to your network. In a ‘Mobile World’, this may not be true anymore.

Thinking about these issues, I thought about the characteristics of my ideal printer:

  • Never needs updates – I don’t want to waste my time updating my drivers.
  • Is OS agnostic – the driver must work on all operating systems.
  • Is device agnostic – the driver must work on all devices.
  • Is printer agnostic – I don’t want to upgrade the driver even when I upgrade the printer.
  • Is network agnostic – the driver must work across networks or even over the Internet.
  • Is secure – the driver must be secure over the network or the Internet.
  • Is self-fixing – the bugs in the driver must be fixed automatically by the printer manufacturer.

I was wondering if there could be a driver that fulfills my stringent criteria. And then, I found my ideal printing solution – Google Cloud PrintGoogle Cloud Print lets me print from multiple devices and even print over the Internet!


All you need to make it work is a Cloud Ready Printer, an Internet connection, and a Google (Gmail) account.

How do I connect my printer to Google Cloud Print?

Make sure your printer is ‘Cloud Ready’. Most network or Wi-Fi printers are Cloud Ready these days. For example, the Samsung SCX 3405FW. Here are a few simple steps to connect your printer to Google Cloud Print:

1) Connect the Cloud Ready printer to your router over Wi-Fi or via ethernet.

2) Logon to your printer through a browser. The URL will be something like http://192.168.x.x. Once you enter the user name and password to logon to the printer, you will be presented with a dashboard to configure the printer settings. (Check the printer’s user guide for its user name and password.)

3) Go to the Google Cloud Print option. (Check the printer’s user guide for the exact location of the Google Cloud Print setting.)

4) Enter your Google (Gmail) user name and password. This step authorizes your printer to receive print jobs from Google Cloud Print.

5) After configuring your printer to receive print jobs from Google Cloud Print, your Google email will be displayed as the registered email.


How do I print a document using Google Cloud Print?

Once your computer is connected to Google Cloud Print, download the Cloud Print app on your mobile device. You can then print any file from any device over the Internet or local network. Here are a few steps to print any file on an Android device:

1) Open Cloud Print. Click Local > Files to access files available locally on your phone.


2) Select any file and confirm the print action.


3) Modify the Page Setup and print the file.


The file is immediately printed over the Internet!

If you have multiple devices, with multiple operating systems, you need not worry anymore. Google Cloud Print automatically manages the drivers for all devices. All you need is a Cloud Ready printer connected to the Internet.

With Google Cloud Print, you never have to update the printer drivers. Even if you change your printer, you never have to reinstall the drivers. The only thing you need to do is ‘authorize’ your printer to accept print jobs from Google Cloud Print.

Is Cloud Printing useful for business?

Google Cloud Print could be a game changer for IT departments in small business. With Google Cloud Print, small businesses could avoid having a computer at various warehouse locations and just schedule a print job over the cloud.

Consider a hypothetical small business selling cosmetics to a small customer base across a distributed geographic location:

  • The mobile sales teams in various shopping malls (or the branch office) accept orders and send the print jobs to the cloud ready warehouse printers.
  • The warehouse employee creates a package and pastes the shipping label on the package.
  • Since warehouses do not have computers, there is no computer maintenance required.
  • Google Cloud Print not only saves money for small businesses, but also reduces the hassle of managing computers in multiple locations.

It’s really cool isn’t it? It’s time you upgraded to a printer that supports Google Cloud Print. Because, printer drivers could soon become extinct. It would be interesting to see how Google Cloud Print evolves in future. I would’t be surprised if Google adds multiple features like Cloud Scan or Cloud Fax considering the fact that most Cloud Ready Printers are Multi-function printers (printer, scanner, fax, and copier). 

The next time you want to print an important document, don’t wait till you get home. You could print remotely when you are on your way home in your car or on the train. Better still, you could print from halfway across the world, and your printer will still finish the job right away like a humble minion.

Managing Mobile Devices at Home

I am sure most of us have multiple mobile devices at home, such as smartphone, a tablet, or the distant cousin of the smartphone and tablet – the phablet. These mobile devices may be a combination of iOS, Android, and Windows Mobile.

With our kids, spouse, and parents using mobile devices, it becomes imperative for us to manage all these devices from a single interface. Especially with less technical users, it is important to manage tracking, apps, and other settings on the devices for them.

The Questions

When managing these mobile devices at home, there are some questions that plague us quite a bit, such as how do I:

  • Track my devices: Where are the devices right now? Where have the devices been?
  • Monitor my devices’ data: How do I monitor call history, Wi-Fi networks that the device has connected to, and Apps installed on the device?
  • Manage apps on my devices: How do I install an app on all my devices remotely? Can I delete Apps from my devices remotely?
  • Protect my devices: How do I enforce a Password Policy, remotely lock, or remotely wipe the device?

The Problem

Unlike corporate IT departments, we don’t really have a budget for advanced Mobile Device Management (MDM) solutions. So, in effect, here’s my problem:

  • I want to manage my mobile devices at home (for my family).
  • I have no money to buy an MDM solution for my home.
  • I don’t really have the training required to use an MDM solution.

The Solution

The answer to my problem is the Mobile Device Management solution by a company called 3CX. This MDM solution is cloud-based and so there is no installation required except on the mobile devices you want to manage. The 3CX Mobile Device Management solution is easy to use, has a web-based interface, and lets you manage up to 5 devices for free.

Setting up the MDM

Here’s how I set up the MDM solution on my devices:

  1. Go to http://www.mobiledevicemanager.com/ and sign-up. To activate the account, click the link in your email.
  2. Download and install the 3CX MDM App on the Android and iOS devices. When prompted, I logged in using using the credentials I created in step 1.
  3. Go to http://www.mobiledevicemanager.com/ from any browser and log in. Go to the Pending Approval node and approve the devices.

(For more information, refer to the 3CX getting started guide. It’s concise and well written.)

And Voila! The devices are visible on the web-based dashboard.


The interface is clean and easy to navigate. I’ll talk about a few cool features of the MDM solution. I’ve added some screenshots of the MDM solution. You can click the images for a larger view.

Managing Mobile Devices

The Devices node lets you manage all your devices from a single interface. As you can see, both my devices are listed. One interesting feature is that the node shows you the last time when your device checked-in.2a_Device_List

Click the device you want to manage. For this example, I clicked the Android device. A few critical icons appeared as soon as I clicked the device. I’ll talk about a few important ones:


  • Messaging – you can send a message to the device directly from this interface.
  • Lock – you can lock the device remotely.
  • Unlock – you can unlock the device remotely. You can also set a passcode.
  • Wipe – if the device was stolen, you can wipe the data on the device remotely.

The following tabs show a lot of useful information.

Map tab – displays the current location of the device.


The Info tab shows useful information about the device. I found it interesting that it was able to tell me if the device was charging or on battery. Interestingly, it displayed the memory and CPU usage too!


The Applications tab shows the list of applications installed on the device.


The Location History tab shows all the locations where the device traveled to in a certain time frame. The grid shows a time stamp, address, and location co-ordinates. The location is accurate to a few meters. 2e_Location_History

The Call History tab shows a list of all outgoing and incoming calls with the duration.


The Policy tab lets you manage the usage policy. You can also enforce a password policy, if necessary.2g_Policy

The Wi-Fi tab shows all the Wi-Fi networks the devices connected to in a certain time frame. Interestingly, it also displays the security type and the visibility of the Wi-Fi networks that the device connected to during those times!


The Email tab lets you configure an email account on the device remotely.



The MDM has a Tree pane and an expandable node for easy navigation. You can expand nodes that have one or more sub-nodes.


Depending upon the node, the following information is available:

  • Dashboard –  a snapshot of the managed devices.
  • Devices – list of managed devices and detailed information shown through various tabs as described in the previous section.
  • Pending Approval – lets you approve the devices before managing them.
  • Group Policies – lets you define the behavior of certain settings. For example, your Password Policy.
  • Messages – lets you send messages to online devices.
  • Users – lets you add, modify, or delete users.
  • Alerts – lets you configure alerts for various actions performed by the device or the user.
  • App Management – lets you manage the Apps on the devices. (I will explain App Management further in this post).
  • System – settings for the Administrator.
  • Resources – help files and other useful links.


The 3CX MDM lets you configure alerts based on various actions. Here is how the alert configuration screen looks:


App Management

I have saved the best for the last. App Management, in my opinion, is the most important feature of this solution. Expanding the App Management node shows these other sub-nodes:


1) Installed Apps – shows the list of apps installed on your managed devices. You can select a particular app and click Remove Application to remove the app from the device.


2) App Repository – shows your own App Repository. You can create your own App Repository by adding apps from iTunes or Google Play store. You can use this repository to quickly install apps onto the managed devices. For example, if you are going to Disney world, you can add the Disney app to the repository. You can then easily deploy this app onto the devices used by your family.


Once you have an app to the App Repository, go to Devices > [Your Device Name] > Applications (tab) > Add from Repository (button) and select the app from the dialog that opens. Select the App you want to deploy to the device and click Add.


3) Whitelisted Apps – users of your mobile devices are allowed to download these apps. For example, I added the weather app as a Whitelisted App. The users of my managed mobile devices can now install the weather app. 5d_Whitelisted_Apps

4) Blacklisted Apps –  users of your mobile devices are not allowed to download these apps. For example, I added a poker app as a Blacklisted App.



Homes and people are now connected via mobile devices. With more and more devices entering our homes, the safety, security, and management of our mobile devices become a critical task. Consequently, Mobile Device Management solutions are not meant for corporates alone. Homes need MDM solutions too. Needless to add, you are now the IT administrator of your connected home.

Disclaimer: The Digital Dimension of Technology is an independent non-commercial technology blog. We have not been endorsed by 3CX. 

Mobile Payments: Leave your wallet at home!

How many times have you rushed to work only to realize that you have forgotten your wallet at home? Well, the only option then is to borrow money from your co-workers (for lunch or the odd coffee) and this can be quite embarrassing! And now think about the one thing you never leave home without these days? You guessed it right – your mobile device. People are glued to their smartphones throughout the day and sometimes, even in bed.

The mobile world presents a great opportunity for any seller to accept payments using your mobile phone. If your mobile phone was also your wallet, you would never have to carry your “real” wallet.

Just out of a curiosity to see how such a concept would work, I decided to install a mobile payment app on my Android phone.

Setting up Mobile Payments

Before paying using my smartphone, I had to enable NFC, download the mobile payment app, register my credit card, and configure the app itself.

Following are the step-by-step procedures:

1. Enable NFC: First, I enabled the Near Field Communication (NFC) feature on my Android phone. NFC allows smartphones to communicate with other devices in the vicinity. The communication is encrypted. Smartphones that do not have NFC cannot be used for mobile payments (for example, the iPhone). As soon I enabled NFC, a N sign appeared on the top of the screen.


2. Download the Mobile Payments App: I downloaded the CIBC mobile payments app. You can download the mobile payments app for your credit card/bank.
3. Call the bank to activate: There was a manual process involved with CIBC. I had to make a phone call to CIBC to activate mobile payments for my credit card.
4. Receive notification from CIBC Mobile Payments: Once I received the notification, I knew the activation was successful.
5. Set a password: This step is optional. For security reasons, it is better to set a password – just in case your mobile phone is lost or stolen.


The configuration was complete and the app said ‘Congratulations!‘.


Making a Mobile Payment 

Once the setup was complete, I tried to figure out how I could make a payment. Surprisingly, making a payment was extremely simple.

1. Launch the Mobile Payment app (CIBC) on your smartphone. Enter your password if you have set one.


2. Tap the credit card to activate Pay Mode for 30 seconds.


3. Tap your phone on the payment terminal. You can also move your smartphone within 10 centimeters of the payment terminal. The payment is processed.

Security Features in Mobile Payments

The mobile payments app has many security features:

  • Call the bank to add your credit card. This ensures someone else is not activating your card.
  • Password on the mobile payments app. This is in addition to the password on your phone.
  • Pay Mode deactivated in 30 seconds. This ensures that your credit card information is not read from your phone when you don’t want it to be read. You are always in control.
  • Communication between the smartphone and the terminal is always encrypted.

Advantages of Mobile Payments

  • You don’t need to carry your wallet.
  • Reduce credit card theft. Since you are not swiping your credit card anywhere, it cannot be read by hackers.
  • Any terminal that accepts VISA payWave® or MasterCard PayPass™ will also support NFC transactions.

Disadvantages of Mobile Payments

  • There aren’t many touch-to-pay terminals at the moment.
  • Not all credit card companies offer mobile payments.
  • Not all mobile carriers offer mobile payments.
  • You need a separate SIM card to enable mobile payments (provided by the carrier).
  • If smartphones are lost or stolen, the credit card details can be extracted by a smart hacker.

The smartphone industry is growing at an alarming pace. Up until yesterday, your smartphone was your computer, camera, and maybe even your bathroom mirror. Today, smartphones are credit cards and mobile payment terminals. You can now forget your wallet at home and you don’t need to borrow lunch money from your co-workers!

Disclaimer: The Digital Dimension of Technology is an independent technology blog. We have not been endorsed by Rogers, Samsung, CIBC, or Google (Android). We do not endorse the security, usability, and reliability of mobile payments. 


Going beyond the device: Expanding the horizons of Super Zoom

Have you ever pushed your device to the limit? Have you ever made your device do what it was not meant to do, like over-clocking your CPU or Jail-breaking your iPhone? I just did something like that. Only it’s something much safer than over-clocking or jail breaking. And I did it to my camera.

I have been using a Super Zoom camera for a while now. A super zoom camera comes with a lens that can go from a Wide Angle to Super Zoom. The Canon SX 40 HS is a good example as it can go from 24mm (wide angle) to 840mm (super zoom).

There are some advanced features that are not available in a Super Zoom. One of the most important missing features is a Remote Shutter Release option. Some DSLRs come with a Wireless Shutter Release option where you can mount your camera on a tripod and take the picture without touching the camera.

Many a time I’ve really really needed a Remote Shutter Release option. For example, when I take photos of the Moon/Super Moon or when I take artsy pictures at night. My super moon picture:

Downtown Vancouver at night:

[For more photos, visit my Photo Blog]

In such cases, I have either zoomed in quite a bit, or am taking the picture in low light conditions. The slightest shake translates into a very bad picture. To avoid shaking the camera in such cases, I usually activate the 10 second timer. But there is some residual oscillation (shake) which sometimes messes up the photos. Reading the camera’s user guide told me that that there was no inbuilt no Remote Shutter Release option available. I also visited many specialty camera in the hope of finding an external device that could act as a remote shutter release. To my utter disappointment, I could not find such a device.

Then, one fine day, I discovered CHDK – Canon Hack Development Kit. This is an open source community that creates programs for Canon cameras to add capabilities in addition to the existing features, for example, a Remote Shutter Release option. So, I decided to build my own Remote Shutter Release kit. Here’s what I did:

(A) Installed CHDK on my camera (the easy part)

To install CHDK:

  1. Go to the http://chdk.wikia.com/wiki/CHDK
  2. Check the firmware version on your camera.
  3. Download the correct build based on the firmware version. Unzip it on your computer.
  4. Copy the CHDK files on the SD card.
  5. Insert the SD card in the camera and press the Review button.
  6. Go to  Menu and update the firmware.

The program is loaded into the memory temporarily. When you shut off the camera, it is removed from the memory. The program does not interfere with the manufacturer’s original firmware. CHDK also provides a detailed user guide.

(B) Created a physical Remote Shutter Release device (the most difficult part)

I searched the Internet and discovered that I have to build a remote shutter release device on my own. I found a great video of a camera user who had built a shutter release device from scratch. I could not follow the same path since I am not as tech savvy. Imagine the trouble if I were to solder a diode onto a circuit!. Moreover, being a technical writer by profession, I believe in simplicity. I wanted a solution that was simple, easy to implement, easy to use, and of professional quality. I could not build a remote shutter release device, and nobody sold one for my camera. It seemed like a dead end.

Numerous searches on the Internet provided no answers. However, I discovered a few things that helped me create a solution for myself:

  • Send > 4V on the data port of the camera to release the shutter.
  • A very high voltage (> 8V) might damage the camera!

I performed some trial-and-error experiments and discovered a very simple solution for the problem. I used the following readymade components:

  • Duracell USB Battery Backup: I used the Duracell USB Battery Backup to experiment with the Remote Shutter Release feature of CHDK. The Duracell USB Battery Backup is rechargeable, has an ON/OFF switch, and is slightly bigger than a matchbox. It has a USB (output) port for charging external devices and a mini-USB (input) port for charging the backup battery.

  • Mini-USB cable: I used a mini-USB cable for the solution. You can easily use the data cable that came with the camera.

(C) Made the hardware and software work together

To make the hardware and CHDK software work together:

  1. Install CHDK on the SD card and update the Firmware [as explained in (A) above]. Once CHDK is in the memory, go to the CHDK menu and enable Remote Shutter. (Print button + Menu button displays CHDK menu.)
  2. Connect the mini-USB cable to the camera’s data port and the other end to the USB port on the Duracell USB Battery Backup.
  3. Switch ON the Duracell USB Battery Backup and Switch OFF immediately. The camera focuses.
  4. Switch ON the Duracell USB Battery Backup and Switch OFF immediately again. The camera releases the shutter!

And I am sure this solution will not damage the camera. Here’s the simple reason why: The camera is designed to use a mini-USB cable that is connected to a computer’s USB port (which has a ~4V output). The Duracell USB Battery Backup also has the same output since it is basically a USB port without the data transmission capabilities.

I was amazed that another device could work as a remote shutter release for a camera that was not built to use one! Amazon, eBay, camera stores, and photography forums did give me ideas for creating this seemingly simple solution. So I thought I must share this discovery with all the other Super Zoom users out there that are also looking for something similar.

Happy Super Zooming!

More information about the Duracell USB Battery Backup: http://www.duracell.com/en-US/product/instant-usb-charger.jspx

Update: May 12, 2012: If you want to use a clicker-like device, the iGo Anywhere USB Micro/Mini Charger would be ideal. Instead of a switch, you could use the button to release the shutter. For more information about iGo Anywhere USB Micro/Mini Charger, visit the Source website here. I tested it out and it works perfectly fine.

Secure your digital identity with Two-step Authentication

I am assuming you have already heard about the Heartbleed bug. If not, here’s what it is: most websites use a technology called Open SSL to securely communicate between users and servers. The servers were compromised due to a vulnerability in the Open SSL code. Due to this vulnerability, hackers may have gained access to millions of usernames and passwords. Your login credentials on many websites are most probably compromised. This breach is not the first time hackers have gained access to usernames and passwords. And I’m sure this won’t be the last time.

Usernames and passwords are gatekeepers to your digital identity. When usernames and passwords are compromised, your digital identity is at risk. If your login credentials are misused, it may take years to recover from the damage. Whether it is your personal brand or your business, securing your digital identity is extremely important.

And thus, it brings us to the following important questions:

  • As a user, how can you safeguard your usernames and passwords on frequently used websites?
  • Is there a way to ensure your usernames and passwords are useless to hackers even if websites are hacked and your credentials leaked?
  • How do you add one more level of security and prevent unauthorized access to your email, Facebook, Twitter,  LinkedIn, or any other website that defines your digital identity?

The answer is two-step authentication.

Two-step authentication (also known as two-factor authentication or two-step verification)

What is two-step authentication? The first step when you logon to a website is to enter your username and password on the login page. Some websites have added another layer of authentication. In addition to your username and password, websites send a security code via SMS to your phone or show a code generator. If an unauthorized user tries to use your login credentials from an unknown location or browser, a code is sent to your cell phone. Without this code, it is impossible to logon to the website even if an unauthorized user knows your username and password. Using two-step authentication, you can now ensure your login credentials are useless to any unauthorized user.

To summarize, here’s what you do when using two-step authentication:

  • Step 1: Enter the username and password.
  • Step 2: Enter the code sent to you (via SMS or code generator). Step two is only if you logon from a new browser/location.

Two-step authentication is a very powerful feature. However, in my humble opinion, this feature is hidden to the user and not marketed well.

How to enable two-step authentication?

Let’s see how to enable two-step authentication for frequently used websites. As I mentioned earlier, this feature is hidden deep inside websites. Users need to navigate multiple menus, pages, and workflows to enable two-step authentication. Here are a few examples on how to enable two-step authentication for services like Gmail, Facebook, and LinkedIn.



1) Logon to your Gmail.

2) Go to user@gmail.com at the top right corner.

3) Click Account.

4) Click Security.

5) Click Setup.

Screen Shot 2014-04-14 at 1.12.24 PM


6) Click Start setup.

Screen Shot 2014-04-14 at 1.12.41 PM

7) Specify your cell phone number. Click Send code.

Screen Shot 2014-04-14 at 1.13.23 PM

8) Enter the code and click Verify.

Screen Shot 2014-04-14 at 1.13.54 PM



9) Select Trust this computer. (If this is your personal computer, it may be a good idea to select this option.)  Click Next.

Screen Shot 2014-04-14 at 1.14.09 PM

10) Click Confirm to turn on Two-step verification.

Screen Shot 2014-04-14 at 1.15.13 PM


Before these settings are permanent, you must logoff Gmail and logon again. Now, each time you (or an unauthorized user) tries to logon using your username and password from a different browser or location, Gmail sends a code to your cell phone. Without this code, no one can logon to your Gmail account.

This is what you see when you try to logon to Gmail from a new browser:




Facebook has built an amazing code generator as part of the Facebook App on smartphones. Instead of an SMS, you can choose to use the Facebook Code Generator for Two-step authentication. A unique code is generated every 30 seconds right on your smartphone!

1) Logon to Facebook.

2) Go to Settings.

3) Click Security.

4) Click Edit for Login Approvals.

5) Select Require a security code to access my account from unknown browsers. Click Save Changes.


Screen Shot 2014-04-14 at 1.38.05 PM

6) This message is displayed. Click Get Started.


Screen Shot 2014-04-14 at 1.38.13 PM

7) Select the kind of phone you use. Select Android, iPhone or iPod Touch. Click Continue.


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8) Go to the Facebook app on your iPhone or Android phone. Go to Menu > Code Generator and click Activate. A code is shown on your Facebook app. A new code is shown every 30 seconds.


2014-04-14 16.44.29

9) Enter the security code shown on your smartphone into Facebook on the browser. Click Confirm.


Screen Shot 2014-04-14 at 3.29.28 PM

You are now protected by the two-step authentication using the Facebook Code Generator. Each time you access your Facebook account from a different browser, you will be asked to enter a code from the Facebook Code Generator on your smartphone in addition to your username and password.

This is what you see when you try to logon to Facebook from a new browser:




1) Logon to LinkedIn.

2) Go to Account and Settings (click Review).

3) Click Account.

4) Click Manage security settings.

5) Click Turn On for Two-step verification for sign-in.


Screen Shot 2014-04-14 at 3.34.24 PM

6) Enter your cell phone number. Click Send Code. A code is sent to your cell phone via SMS.

Screen Shot 2014-04-14 at 3.34.44 PM


7) Enter the code and click Verify.


Screen Shot 2014-04-14 at 3.35.14 PM


Two-step authentication is now turned on for LinkedIn. Each time you access your LinkedIn account from a different browser,  a code is sent to your cell phone. You must enter this code in addition to your username and password to logon.

This is what you see when you try to logon to LinkedIn from a new browser:


A final word…

Whether it is a keylogger stealing your password from a public access computer, or a hacker hacking into a secure server, your digital identity is always safer with two-step authentication. Even if your usernames and passwords are compromised, two-step authentication keeps your accounts safe using security codes. Even if an unauthorized user gains access to your username, password, and security code, they are useless for using on another browser. If your usernames and passwords are leaked, they are useless without the updated security code from two-step authentication.

Two-step authentication will not protect servers from hackers. Hackers have stolen over 900 Social Insurance Numbers (SIN) from the Canada Revenue Agency systems. Many online services are planning to update their systems to protect against Heartbleed. For example, BlackBerry plans to release a Heartbleed patch for BBMs. As a user, there is not much you can do to protect your information on government systems or enterprise services since they are out of your control.

However, your online accounts are better protected if you are using two-step authentication. Whether it is the Heartbleed bug, a malware, virus, or an unauthorized intrusion, your usernames and passwords are useless to any unauthorized user. Twitter, WordPress, and many  online services now offer two-step authentication.

The security for your digital identity is fragile. So stay safe, stay protected, and secure your digital identity before it’s too late.


[Edited by: Prarthna Sri]

DSLR vs. Super Zoom: A user’s dilemma

When my regular point-and-shoot died, I was faced with a dilemma of whether I should go for a DSLR or a Super Zoom camera. When I was analyzing the differences between a point-and-shoot, Super Zoom, and a DSLR, the following information confused me the most:

  • Point and shoot: 10 Megapixels
  • Super Zoom: 10 Megapixels
  • DSLR: 10 Megapixels

How could three different cameras, with varied features, give the same 10 Megapixel output? (What is a Megapixel, by the way?)

I found it prudent to approach this confusion with some logical reasoning. Obviously, I needed some answers before I could pick a camera. I was looking for simple information, which was hard to find on the Internet. The information available on the Internet had too many technical details (ISO, f –stops, crop factor, depth of field) and jargons (Single-lens reflex, APS-C sensor, micro four thirds). The information available on the Internet is aimed at people who understand the nuances of photography and not end-users. Being an end-user, I wanted to cut through the jargon.

Some of the questions that I needed answered were:

  • What is a DSLR or a Super Zoom camera? (without too many technical details)
  • What are the main characteristics of each camera?
  • How are they different? (without the jargon)
  • Which one will best suit my needs?

(A) How is an image created in a digital camera?

Before going into camera types, let us look at how an image is created in a typical digital camera:

  1. Light: The essence of a photograph – light falls on the object.
  2. Object: The inspiration behind the photograph – the object, which is being photographed, reflects light onto the lens.
  3. Lens: The eye of the camera – light enters the lens.
  4. Shutter: The gatekeeper – the shutter opens for a fraction of a second to let the light in.
  5. Sensor: A Pixel is born! –light falls on the sensor and is converted into pixels. A pixel is 1 unit of the photo captured by the sensor. A photo is made up of many pixels (and hence the term Megapixel which is equal to one million pixels). Cameras had films in the past, which has now been replaced by a sensor.
  6. Processor: A byte born! –pixels are analyzed by the processor and converted to data (bytes).
  7. Storage: The photo is saved – the photo is stored as data on the memory card or internal camera memory.

Now, let us talk about different types of cameras – DSLR and Super Zoom.

(B) What is a DSLR?

A DSLR has the following characteristics:

  1. Shutter – A DSLR has a mechanical shutter. When you press the shutter release button, the shutter opens for a fraction of a second to let the light in. Anything that does not have a mechanical shutter is not a DSLR. The DSLR gives out a loud Clack sound when you press the shutter release button.
  2. Interchangeable Lenses – A DSLR has the feature of interchangeable lenses. You can use a Wide Angle lens (18-55mm) or a Zoom lens (100-300mm) depending upon your requirement. For example, if you want to shoot a large landscape view of a mountain, you could use a Wide Angle lens. If you want to go closer to an object, you could use a Zoom lens.
  3. Larger Sensor – DSLRs typically have larger sensors.

(C) What is a Super Zoom (also known as Bridge or a Hybrid Camera)?

A Super Zoom camera has the following characteristics:

  • Electronic Shutter – Super Zoom cameras do not have a mechanical shutter. The shutter is entirely electronic.
  • Single Lens – Super Zoom cameras have a single lens that can go from 24mm (Wide Angle) to 840mm (Super Zoom – and hence the name). You cannot change the lens.
  • Smaller Sensor – Super Zoom cameras have smaller sensors than a DSLR.

Super Zoom is also called a Bridge camera since a user moves from a point-and-shoot to a Super Zoom and then a DSLR. Since the Super Zoom basically, acts as a ‘bridge’ between the two types of cameras, it is called as Bridge. Also, Super Zooms have excellent lenses (comparable to entry-level DSLRs), but smaller sensor sizes. Since they perform like a point and shoot with some characteristics of a DLSR (good lens), they are also called Hybrid cameras.

(D) What is the difference in quality of photos between DSLR and Super Zoom?

With all the above information, I was still unable to figure out the exact difference between a DSLR and Super Zoom. Assuming the DLSR uses the same lens as a Super Zoom (to compare apples to apples), what does a larger sensor actually mean if both cameras are 10 Megapixels?

Here’s how I understand it – a DSLR has more definition per pixel.

Simply put, when both DSLR and Super Zooms are rated with the same Megapixel count, the DSLR has a larger surface area on the sensor to define the same pixel. Theoretically, if you had to pick out 1 pixel from a photo taken by a DSLR and a Super Zoom, the pixel from the DSLR would have more information about the image.

Let us compare the difference in definition between a DSLR and a Super Zoom to today’s Web and Social Media tools. Let us say I wanted to tell the world the difference between a DSLR and Super Zoom. I could do it in the following ways:

  • Send a Tweet in 140 words.
  • Write a Blog post in 500 or more words.
  • Create an entire Website containing 50 pages with 500 words per page.

I am saying the same thing, but in three different ways. I am getting the same message across, just in different depth. Similarly, a DSLR gives you maximum definition per pixel simply because it is able to capture more information with its larger sensor. A Super Zoom gives slightly less definition for the same image by capturing slightly less information on its smaller sensor.

A DSLR undoubtedly has the best picture quality since it packs more definition per pixel.

(E) Advantages and Disadvantages of a Super Zoom

After a lot of consideration, I finally decided to buy a Super Zoom Camera. Based on my analysis, the Super Zoom had some distinct advantages over DSLRs. The Super Zoom also had quite a few disadvantages when compared to DSLRs.

Advantages of a Super Zoom camera:

  • Compact – easy to carry around. Good for travel.
  • Cheaper – way cheaper than a DSLR.
  • Single lens – you don’t have to buy multiple lenses. You can easily go from 24mm (Wide Angle) to an 840 mm (Super Zoom). Considering the cost of multiple lenses and the inconvenience of carrying an entire bag just for lenses, the DSLR does not make sense.
  • Never lose the moment – since you can quickly go from wide angle to super zoom with the same lens, you need not fumble around for lenses and miss the moment. For example, you can capture portraits, macros, birds, or high-speed boats with equal ease!
  • Great picture quality – good for digital publishing and small-size printing.
  • Easier to maintain – dust particles entering the sensor when you change lenses is one of the greatest drawbacks of a DSLR. Since a Super Zoom has one fixed lens, there is no question of dust entering the sensor.

 Disadvantages of a Super Zoom camera:

  • Smaller sensor – Less definition per pixel. Therefore, you cannot magnify photos like you can in a DSLR. If you plan to print poster-sized photos, a DSLR is the best option.
  • Single lens – A one size-fits all lens can only do so much. Having a portrait and landscape lens helps in a better picture quality, which a Super Zoom can only try to match.
  • Less features – There are some advanced features in a DSLR that are not available in a Super Zoom. For example, a wireless remote shutter release is not available in a Super Zoom.

As far as I am concerned, I am really happy I decided to go with a Super Zoom (a Canon SX 40 HS). Whether you want to buy a DSLR or a Super Zoom really depends on your requirement, taste, budget, and how likely you are to carry the camera around. I hope this information helps you decide whether to go for a DSLR or a Super Zoom.

To see photos taken using my Super Zoom camera, visit my Photo Blog.