QR code

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QR code:

see barcodebarcode,
computer coding system that uses a printed pattern of lines and bars to identify such things as products, mail and packages, and customer accounts; the term also is used for similar coding systems that do not use bar-based patterns.
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QR code

(Quick Response code) A two-dimensional barcode widely used for many purposes. When scanned with a mobile tagging app in a smartphone, the QR code can cause a Web page or app to download or even capture business card data. Codes are found in newspapers, magazines, brochures and store shelves, and billboard-size codes can be scanned at a distance, because the QR app uses the phone's camera.

4K of Alphabetic Data
The QR code can store up to 4,296 alphanumeric or 7,089 numeric characters, and if a high level of error correction is used, up to 30% of the image can be smudged and still be recognized. Created in the mid-1990s by a Toyota subsidiary to track parts on assembly lines, they are widely used in Japan. The technology became an ISO standard in 2000 and gained popularity in the U.S. within the decade.

Google Was a Big Promoter
To promote its local business service, Google sent 100,000 custom-coded QR codes to U.S. establishments in 2009, suggesting they place the code in a prominent location for "mobile tagging." See QR code stickers, barcode, Google Goggles and malicious QR code.

Roll Your Own
To create your own QR code, visit the Kaywa QR code generator at http://qrcode.kaywa.com.

QR Code for ComputerLanguage.com URL
The scanner looks for four squares (arrows) and two alignment lines (yellow) that alternate black and white.

QR Code for ComputerLanguage.com URL
The scanner looks for four squares (arrows) and two alignment lines (yellow) that alternate black and white.

Walking Down the Street
Scanning the QR code on the window sign with a mobile tagging app downloaded information and reviews about this restaurant.

Where's the Bus?
Clicking the QR code at a New York City bus stop retrieves the arrival time of the next bus.

QR Codes Can Be Colorful
These two codes downloaded Web pages. The top one linked to an Escort mobile app, and the bottom one was a news release from Personal Communications Devices (PCD).
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References in periodicals archive ?
Due to the fact that a QR reader and barcode source library can decode the related format from a QR barcode, the parameters, [b.sub.i], n, q, E and C, can be automatically achieved by the QR version and the error correction level of the given QR code.
Visitors can either type in the website address found on illustrative signs at the locations, or scan the QR barcode to be taken to the site automatically.
According to Wikipedia, a QR or Quick Response code is "a specific matrix barcode (or two-dimensional code) that is readable by dedicated QR barcode readers and camera telephones.
11 flip book and a rendering of journalist Amy Goodmanin QR barcode (the next generation of ISDN).
For the market, Mohawk showed several rugs with Quick Response codes--which are two-dimensional barcodes that can be read by QR barcode readers and camera phones to provide additional information to consumers--on the packaging.
- QR or Micro QR Barcode Encoding Selector: https://docs.aspose.com/display/barcodereportingservices/QR+or+Micro+QR+Barcode+Encoding+Selector
While the e-gate requires an e-gate card, the smart gate, designed by Emaratech, can identify a traveller by either their passport, Emirates ID, e-gate card or QR barcode generated via the GDRFA smartphone app.
The QR barcode from a ScriptPro system is printed directly on the prescription label rather than the prescription paperwork, in case the patient misplaces or throws away the paperwork received when the prescription is dispensed.
There are some important enhancements part of this release, such as Improved algorithm to read barcodes even if the image is not rotated, Improved algorithm to Read the barcodes from a PNG image having 100 multiple barcodes in it, improved detection of the barcodes with default settings, support recognition of invasion in the quiet zone for a data matrix, improved 3D-distorted Aztec code recognition, improved recognition of the Aztec code, recognize poor quality code128 with histogram method, improved DotCode regions recognition and read the corrupted QR barcode. Below is the list of main improved features and bug fixes added in this release.
Smart gates are available at Terminal 3 arrivals, which allows registered travellers to clear the immigration process in only 10 to 15 seconds by using either a passport, Emirates ID, Smart Gate card or even a QR barcode via the GDRFA DUBAI smartphone app.
publishes barcode printing software [www.azalea.com], QR barcode tools [www.QRdvark.com], and mobile web development tools.
"What really impresses us about QR barcode technology, when used in conjunction with a loyalty program, is the remarkable potential it has to change how merchants and consumers interact with their cards," said Miller.