What is QR code?
QR code (Quick Response code) is a two-dimensional (matrix) machine-readable bar code made up of black and white square.This code can be read by the camera of a smartphone.
It is used for storing URLs or other information that link directly to text, emails websites phone numbers. It is capable of 360 degrees (omni-directional), high speed reading.
QR Code can store up to 7089 digits as compared to conventional bar codes which can store max 20 digits.
It encodes same amount of data in one-tenth the space of a traditional bar code.
It carries information both horizontally and vertically.
It has error correction capability and data stored in it can be restored even if it is partially damaged or dirty.
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