US Patent 9633344 Device, system, and method of electronic payment

The present invention includes device, system, and method of electronic payment. An operator server may transmit, to a smartphone or other portable wireless device of a patron, a unique time-sensitive and location-based code. The unique code may be used to create an ad-hoc linkage or association between the smartphone of the consumer, and a purchase tab of that patron at an establishment or merchant store. The patron may then utilize his smartphone in order to autonomously close his purchase tab at the establishment, and in order to perform remote electronic payment for the purchase tab to the establishment, without requiring involvement or assistant from waiters or establishment personnel.