| 摘要 |
An unattended system, such as a self-service terminal or an automated teller machine, includes a memory unit which stores a number of application programs, and a register unit which stores a number of signatures associated with the application programs. The system further includes a processing unit which obtains a signature associated with a particular application program, compares the signature with the signatures stored in the register unit, and authenticates the application program only when the signature matches at least one of the signatures stored in the register unit.
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