TWO-DIMENSIONAL BARCODE SYSTEM

摘要

An end-user device, including a processor to prepare barcode-input data including (a) at least one of an identification of a user of the end-user device, and an identification of the end-user device, and (b) data based on activity of at least one of the end-user device, the user of the end-user device, and a security element removably inserted into the end-user device, and prepare a two- dimensional barcode including the barcode input data, the two-dimension barcode being prepared for displaying on a display in a manner suitable for scanning by a communication device. Related apparatus and methods are also included.