QR Code system consists of 2 parts, software and printer to generate QR Codes and a scanner and application program to read them.
Point for generating a QR Code, such as the size of the QR Code and capability of the reading device, are described.
Reading devices are introduced by type. Choose a model that best suits your purpose and the place in which the QR Code is used.
Reading a QR Code with a mobile phone, smart phone or tablet
Reading a QR Code with different makers' mobile phones