| 摘要 |
A remote user authorization verification system including a central device having data imput and output, memory and data comparison facilities, and a plurality of hand held, pocket size remote units arranged for data communication with the central device by means of conventional telecommunications devices, such as a telephone, the pocket size remote units having information input keying apparatus, memory apparatus and enciphering apparatus and being operative for providing an enciphered verification code to the central device for verification of the authorized status of the user.
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