Using validity events to control the use of coupons containing barcodes in mobile devices that display the barcodes for reading by barcode readers

摘要: Technique for ensuring that a device contains coupons with barcodes will not output barcode belonging to an invalid coupon reading system. The technique avoids validation of the at time is provided In technique, mobile responds validity event may affect given by inhibiting provision coupon's system until has been validated on basis information available in outputting barcode, and then again permitting be applications used n times, shared, or become valid after set actions have occurred.