| 摘要 |
A method and apparatus to implement an improved point of sale system. When a transaction takes place, the apparatus analyzes the incoming receipt printer stream and outputs a modified receipt printer stream which includes a QR code which encodes information (such as transaction number, items purchased, price, etc.) about the transaction. The information can be retrieved in numerous ways. For example, a smartphone can scan the QR code to determine the information. Alternatively, the information can be uploaded to a remote server and a smartphone application an use the QR code to determine a code that can be used to retrieve the information from the remote server. |
