QR Codes
So what the heck is a QR Code? Maybe you’ve heard the term, maybe not. These days you see them everywhere. A QR code is that little square bar code thingy that one sees on advertising. Here’s an example:
QR codes typically can be found in advertising, product labels and the like. Sometimes you might see them on the back of a business card. They can be used to store pointer to a web site (URL) or just plain text. QR codes on the back of business card usually contain contact information.
You can see QR codes just about anywhere. You see them in ads and on labels. I’ve seen them on billboards, though I don’t think bill board placement is particularly useful. How are you going to scan the code from a moving vehicle. You think that texting while driving is bad? Try reading QR codes while driving.
So how does one read and decipher a QR Code? First thing that you need is a smart phone. There are several apps for decoding QR codes, many of them free. The app uses your phone camera to scan the code and then decode it. The app that I use on my iPhone is called QRReader. There is a free version and a $.99 version. The free version has ads. You pay the $.99 to get rid of the ads. Fairly simple to use. Just start the app and line up your phone about 2-3″ from the add. As soon as the code is in focus the app beeps to let you know that it has been captured.
Here’s an image of the code being scanned:
The app also has the capability to create a QR code. Also, there are a number of QR code generator web apps, most of them free. Here’s an web app that I’ve used at https://www.qrstuff.com You can either save your QR code as a JPEG file, email or print it.
There you have it. Now you can use QR codes to amaze and amuse your friends.
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calherewecome 
December 27, 2012 at 12:33 pm
I ran in a race this summer where thet included a QR code on your race number. You could scan the code after the race to get your time, pace, and finish number. It may also have included what you had for breakfast and a list of inappropriate content you downloaded from the internet in the past week — I can’t remember.