It is readable by dedicated QR barcode readers, telephone cameras, and to a less common extent, computers with webcams. The code consists of black modules arranged in a square pattern on a white background. The information encoded may be text, URL, or other data.
Common in Japan, where it was created by Toyota subsidiary Denso-Wave in 1994, the QR code is one of the most popular types of two-dimensional barcodes. The QR code was designed to allow its contents to be decoded at high speed.
Although initially used for tracking parts in vehicle manufacturing, QR codes now are used in a much broader context, including both commercial tracking applications and convenience-oriented applications aimed at mobile phone users (termed mobile tagging). QR codes may be used to display text to the user, to add a vCard contact to the user's device, to open a Uniform Resource Identifier (URI), or to compose an e-mail or text message. Users can generate and print their own QR codes for others to scan and use by visiting one of several paid and free QR code generating sites or apps.
QR codes can be used in Google's mobile Android operating system via both their own Google Goggles application or 3rd party barcode scanners like ZXing or Kaywa. The browser supports URI redirection, which allows QR codes to send metadata to existing applications on the device. Nokia's Symbian operating system is provided with a barcode scanner, which is able to read QR codes, while mbarcode is a QR code reader for the Maemo operating system. In the Apple iOS, a QR code reader is not natively included, but more than fifty paid and free apps are available with reader and metadata browser URI redirection ability. With BlackBerry devices, the App World application can natively scan QR codes and load any recognized Web URLs on the device's Web browser.
The technology has seen frequent use in Japan, the Netherlands, and South Korea, while the rest of the world has been slower in the adoption of QR codes.
Now, you know that what are QR codes? QR codes are being used for various purpose these days. Many publishers are using the QR codes for spreading their content among the users. That is why, QR code generators are so much in demand these days. Sparq is one of the best qr code generator service which provides lots of features and facilities which can help in improving the business of a publisher. QR codes are going to be more popular in the near future and would be one of the most used mobile application very soon.
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