Mobile device with time-varying magnetic field and single transaction account numbers

摘要

An electronic transaction card communicates with an add-on slot of an intelligent electronic device. The add-on slot may be a memory card slot. The intelligent electronic device may be a mobile phone or other device with or without network connectivity. The electronic transaction card may have magnetic field producing circuitry compatible with magnetic card readers, smartcard circuitry, other point-of-sale interfaces, or any combination thereof.

主权项

1. A mobile phone comprising:
circuitry to produce a time-varying magnetic field that mimics a swipe of a magnetic card; and a processor coupled to the circuitry to cause the circuitry to produce a time-varying magnetic field that represents a single transaction account number.