Device, system and methods of conducting paperless transactions
a technology of paperless transactions and devices, applied in the field of universal electronic transaction cards, can solve the problems of inconvenient carrying a substantial number of such cards, inconvenient and inconvenient writing documents for the credit card user, and a substantial cost to the credit card institution, so as to eliminate all paper transactions and bills, eliminate paper receipts at the point of sal
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[0059] The embodiment of the Universal Electronic Transaction (UET) Card shown in FIG. 1 consists of a large full scale liquid crystal display with touch-memory screen 10, a LED light emitting diode to indicate on / off status 11, an on / off switch 12, metal contacts 13 to read / write to and from the memory and to charge the battery through an external unit, such as a communications interface unit, a slide type control to manage display brightness 11, plastic cover and enclosure 15, speaker or beeper 16 to activate an audible alarm during low battery or a reminder signal and associated electronics hardware and software to store and analyze personal, account, credit, and transactional information. The size of the UET card may be around 3½″×2½″, which is similar to the normal plastic credit card in use today. It is designed to be carried in the wallet and / or packets.
[0060] In the preferred embodiment discussed herein, the user may enter information into the memory of the UET card by touc...
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