What is a QR code?

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What is a QR code?
QR code - any information, specially encoded, a square image. This can be plain text, an internet address, a phone number, the location of a specific location, and so on. Today, modern phones with a camera make it easy to read the information hidden under the square-shaped image. All we have to do is point the phone camera at the QR code and get the information encoded in it.
QR-code is derived from the English word "Quick Response", which means Quick - quick, Response - response, ie "quick response". This system was created in 1994 by the Japanese company Denso-Wave. A single QR code can contain 7089 numbers, 4296 numbers-letters, 2953 bytes or 1817 hieroglyphs in the binary number system.

110 comments to “What is a QR code?”

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