How to Use QR Codes
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Quick Response QR Codes are a fast way to tag physical items that can be easily scanned by mobile phones allowing people to almost interact with the online site from the offline tag. Watch this example of scanning a QR code on a restaurant table tent using an iPhone.
A QR code is a type of matrix barcode (or two-dimensional code) first designed for the automotive industry. More recently, the system has become popular outside of the industry due to its fast readability and comparatively large storage capacity. The code consists of black modules arranged in a square pattern on a white background. The information encoded can be made up of four standardized kinds ("modes") of data (numeric, alphanumeric, byte/binary, Kanji), or by supported extensions virtually any kind of data.
Created by Toyota subsidiary Denso Wave in 1994 to track vehicles during the manufacturing process, the QR code is one of the most popular types of two-dimensional barcodes. It was designed to allow its contents to be decoded at high speed.
The technology has seen frequent use in the United States. QR usage is growing fastest in Canada and Hong Kong.
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