QR Code (Quick Response Code)

QR Code is a 2D matrix symbology capable of encoding up to 2,509 numeric or 1,520 alphanumeric characters, with built-in error detection and a scalable grid size.

The QR Code (Quick Response Code) is a 2-dimensional matrix code. It can encode up to 2,509 numeric or 1,520 alphanumeric characters and offers three levels of error detection. The smallest QR Code measures 21 x 21 cells (each cell encodes one bit) and can grow in increments of 4 cells up to a maximum size of 105 x 105 cells. The squares in the bottom-left, top-left, and top-right corners are locator patterns.

The QR Code was developed in Japan by the Nippondenso Company; it was introduced in 1994 at the Japan Scan-Tech show and was submitted to AIM for consideration as a standard in 1996.

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