InventorsAssigneeUS Classes455/557, Interface attached device (e.g., interface with modem, facsimile, computer, etc.)235/451, Capacitive235/380, Credit or identification card systems235/449MagneticAttorney, Agent or FirmInternational Classes H04B 1/38 G06K 7/08 Issued Patent Number:7828214
Abstract textAn 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. | 
