WiFi QR Code Generator & Scanner +Android Studio +AdMob

QR code  (abbreviated from  Quick Response Code ) is the trademark for a type of  matrix barcode  (or two-dimensional  barcode ) first designed for the  automotive industry in Japan . A barcode is a machine-readable optical label that contains information about the item to which it is attached. A QR code uses four standardized encoding modes (numeric, alphanumeric, byte/binary, and  kanji ) to efficiently store data; extensions may also be used.  supported extensions, virtually any type of data.