A QR code abbreviated from Quick Response code. A QR is a matrix bar code that is readable by dedicated QR barcode readers. The code consist of black modules arranged in a square pattern on a white background. Lately it is possible to come up with colored QR also. The information encoded may be text, URL, email address or other important data.
It is very common in Japan, it was first created in Japan 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 content to be decoded at high speed
QR code for Niraj Kakodkar which has his personal details like phone no and website.
QR technology has seen frequent use in Japan, Netherlands, and South Korea, while the rest of the world including India has been slower in the adoption.
In the initial stages QR codes were used in tracking parts in vehicle manufacturing, but now are used in a much border context, including both commercial tracking applications and convenience-oriented application aimed at mobile users. 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 storing addresses and Uniform Resource Locators (URLs) may appear in magazines, on signs, buses, business cards, or almost any object about which users might need information. Users with a camera phone equipped with the correct reader application can scan the image of the QR code to display text, contact information, connect to a wireless network, or open a web page in the telephone's browser. This act of linking from physical world objects is termed hardlinking or object hyperlinking.
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,[3] while mbarcode[4] 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.
Custom/design QR codes and extreme QR codes are now beginning to emerge whereby brands are able to add their logos and designs with the traditional QR code. Web services are making it easier and cheaper for people to create and track QR code marketing campaigns.
Standards:
There are several standards in documents covering the physical encoding of QR codes.
License:
QR codes is free of any license and is clearly defined and published as an ISO standard. The term QR code is a registered tradmark of Denso wave Incorporated and have got the patent rights on QR but has chosen not to exercise them.
Storage:
The maximum values below apply to version 40 with error correction capacity level L.
