A QR code is a two dimensional barcode that stores information in black and white dots.
Error correction feature. Even if a QR Code is partly smeared or damaged, it has the capacity to correct itself and restore the original data. Many ways of using QR Codes. QR Codes are used in a variety of situations. Many examples of QR Code-based solutions are introduced here focusing on automatic identification devices.  QR codes have become common in consumer advertising. Typically, a smartphone is used as a QR code scanner, displaying the code and converting it to some useful form (such as a standard URL for a website, thereby obviating the need for a user to type it into a web browser). QR codes also may be linked to a location to track where a code has been scanned. Either the application that scans the QR code retrieves the geo information by using GPS and cell tower triangulation (aGPS) or the URL encoded in the QR code itself is associated with a location. Most often, QR codes are used to link to a website or video or some other online content. Your scanning app should preview the link for you as a safety feature so that you can't be automatically redirected to a malicious (or otherwise untoward) website or video.  You can easily generate a QR code using a site like Kaywa.com or you can use the Open Source code to generate codes for you if you have a smart developer on hand. Google also has a tool — see our separate article about that: Close-Up With Google’s New QR Code Generator. QR is short for Quick Response (they can be read quickly by a cell phone). They are used to take a piece of information from a transitory media and put it in to your cell phone. You may soon see QR Codes in a magazine advert, on a billboard, a web page or even on someone’s t-shirt. QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed for the automotive industry in Japan. A barcode is a machine-readable optical label that contains information about the item to which it is attached. QR codes also may be linked to a location to track where a code has been scanned. Either the application that scans the QR code retrieves the geo information by using GPS and cell tower triangulation (aGPS) or the URL encoded in the QR code itself is associated with a location. A QR Code (it stands for Quick Response) is a mobile phone readable bar code that can store website URL's, plain text, phone numbers, email addresses and pretty much any other alphanumeric data. The QR Stuff QR Code Generator allows you to create either dynamic or static QR codes and download them for immediate use.  Information about our QR code generator. You can generate free QR codes on this website. A QR code is a two dimensional barcode that stores information in black and white dots (called data pixels or “QR code modules”). Besides the black and white version, you can also create a colored QR code.  The reason why they are more useful than a standard barcode is that they can store (and digitally present) much more data, including url links, geo coordinates, and text. The other key feature of QR Codes is that instead of requiring a chunky hand-held scanner to scan them, many modern cell phones can scan them. QR is short for Quick Response (they can be read quickly by a cell phone). They are used to take a piece of information from a transitory media and put it in to your cell phone. You may soon see QR Codes in a magazine advert, on a billboard, a web page or even on someone’s t-shirt. Short for quick response code, a QR code is a type of two-dimensional (2D) barcode that can be read using a QR barcode reader or camera-enabled smartphone with QR reader software. A QR code is able to carry information in both the vertical and the horizontal direction, which is why it is called a 2D barcode. QR Codes can be printed and displayed anywhere a mobile phone user might scan the code such as in a magazine or displayed at a cash register. They can also be displayed online. There are a number of online services that will generate a QR Code based on the information you specify when mapping the QR code.
http://www.qrcode.com/en/about/ https://en.wikipedia.org/wiki/QR_code http://www.androidcentral.com/android-z-what-qr-code http://searchengineland.com/what-is-a-qr-code-and-why-do-you-need-one-27588 https://en.wikipedia.org/wiki/QR_code http://www.qrstuff.com/ http://goqr.me/ http://searchengineland.com/what-is-a-qr-code-and-why-do-you-need-one-27588 http://www.webopedia.com/TERM/Q/QR_Code.html
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