Quick response code is designed to be readable in high speed comparing to barcode. QR code has special position detection pattern at 3 comers so that the code can be read 360 degeee. Applications can detect the QR code 20 times faster than bar code.
QR code position pattern at 3 corner allows it to be easily derived if its position, size and inclination. It also has timing pattern running from one position detection pattern to another,and alignment patterns as smaller square within the code grid.
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