QR codes - a quick way to swap bits of information

QR code for URL totalFlux.blogspot.com encoded with RedLaser iPhone app

There are many different ways one can transfer information these days. QR code is yet another way to do just that. What it is essentially is a 2D bar code that anyone with a capable mobile device and the right application can generate as well as scan. QR codes are not exactly a new phenomena since they have been used in the automotive industry to label parts for many years. However, in recent years with the advent of the smart phone QR codes started to trickle into the consumer markets. There are many QR applications available on the iPhone as well as other smart phones. For example I used a free application called RedLaser to generate the QR code at the top of this page on an iPhone. With RedLaser it is a breeze to encode contact information, a URL, or any other snippet of text. If you already own a smart phone today grab one of the numerous QR applications available for your device and see for yourself how easy it is to create your own two-dimensional bar code.


To learn more about QR codes please visit Wikipedia

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