Well, we all know about QR codes. This is for the ones who spent the last decade in space and missed one of the important advance in mobile computing.
QR Code is a type of matrix bar-code first designed for the automotive industry. Lately, the system has become popular outside the industry due to its quick readability and significant storage capacity when compared to standard bar-codes. The code comprises of black square dots arranged in a two-dimensional pattern on a white background. The data encoded can be made up of four standardized kinds of data (numeric, alphanumeric, binary, Kanji), or through supported extensions, virtually any kind of data.
They come to us from Japan where it is very common. QR is short for Quick Response, they can be read quickly by a cell phone. They're used to take a piece of information from a media and put it in to your cell phone. You may have seen QR Codes in a magazine advertisement. When it is in your cell phone, it may give you information about that business. If you show your phone a QR code to see a trailer for a movie, then your phone will perform a search and display the movie.
