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.
..... Click the link for more information.

QR code

(Quick Response code) A two-dimensional barcode widely used for many purposes. When scanned with a mobile tagging app in a smartphone, it can cause a Web page to download with information about a product, local event or just about anything. QR codes can make mobile payments (see CurrentC), and they can download apps or 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 and Google Goggles.

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).
References in periodicals archive ?
One of the new safety and security initiatives undertaken in this regard is the QR code based digital parking system.
Historically, four challenges have held QR codes back: friction in accessing a QR scanner, the unpopularity of blind links, not being useful often enough, and the lack of a feedback loop.
Cardiff Bereavement Services, which looks after several of the memorials, installed some of the QR codes.
With the scan-to-pay feature, consumers can pay for products and services by scanning QR codes displayed by merchants and stores.
At Samyan Market, a market and shopping area in Bangkok that sells everything from vegetables to handbags, vendors said QR codes were taking off although some shoppers still prefer to use cash, particularly those who are less tech-sawy
ALEA and PETAA released an infomercial as a response to the Federal Government's Phonics check for Year 1 (scan the QR code below
This phenomenon has made QR codes increasingly popular in the country's retail landscape, with companies using them in print advertisements, brochures and retail products among others to offer detailed information regarding their products and services.
Visa has enabled the growth of merchant-presented QR code payments around the world with its innovative mobile payments solution, mVisa, which allows consumers to pay for goods and services by scanning a QR code on a smartphone or entering a merchant number into their feature phones.
a) Finder Pattern (1): The finder pattern consists of three identical structures that are located in all corners of the QR code except from the bottom right one.
The QR code is useful for unlocking a special event.
Among tiny computer sensors, QR code technology is a very suitable pairing tool for u-learning applications for three main reasons.
By merely tapping the mobile device on a page of the newspaper with the NFC tag or scanning the QR code, the reader will be linked to a video especially produced by the Manila Bulletin for the 117th celebration of Philippine Independence.