Patent ID: 6957339

Claim:
A user verification system, comprising: a portable electronic device, which is adapted to be carried by a user with a function as a debit card; a data processing device for directly accessing such portable electronic device, temporarily installed therein, so as to function as a debit card terminal for the portable electronic device; and a management device installed in a bank to serve as a host computer that manages the user's bank account from which payment for a purchase made with the portable electronic device, as the debit card, is withdrawn, said managing device accessing said portable electronic device via said data processing device and verifying said user utilizing a personal identification number (PIN), said data processing device including: a biometric information measuring unit for measuring biometric information of said user; a biometric feature data extracting section for extracting to-be-verified biometric feature data from said biometric information, which has been measured by biometric information measuring unit; and a first transceiving interface for transmitting/receiving data to/from said portable electronic device and said management device, said portable electronic device including: a biometric feature data register section having pre-stored valid biometric feature data of an authorized user of said portable electronic device; a second transceiving interface for transmitting/receiving data to/from said data processing device; a biometric feature data verifying section for comparing to-be-verified biometric feature data, which is received from said data processing device via said second transceiving interface, with said pre-stored valid biometric feature data; and a PIN register section having a pre-stored PIN of said authorized user of said portable electronic device, said to-be-verified biometric feature data being transmitted from said first transceiving interface of said data processing device to said portable electronic device, said biometric feature data verifying section of said portable electronic device comparing said to-be-verified biometric feature data, which has been received via said second transceiving interface, with said pre-stored valid biometric feature data, and as the result of the comparison, if said to-be-verified biometric feature data matches said pre-stored valid biometric feature data in terms of a predetermined matching condition, said PIN being transmitted from said second transceiving interface of said portable electronic device to said management device via said first transceiving interface of said data processing device.