| 摘要 |
An auto-dialer (100) suitable for use as a smart card capable of being acoustically coupled to a telephone (122) and being reprogrammed in response to acoustic signals. The auto-dialer is comprised of a dual tone multi-frequency (DTMF) encoder (110), a DTMF decoder (112), a microprocessor (104), an input device (105), a read only memory (ROM) (106), a random access memory (RAM) (108) and a speaker/microphone (114). The programming and other features of the auto-dialer (100) can be enabled or disabled by the auto-dialer (100) in response to persecuted signals comprising a string of DTMF tones. Alternatively, the housing for the auto-dialer can be configure as having a generally saucer shaped head assembly for housing a speaker and an elongated handle. The auto-dialer can also be used as a security device for controlling unauthorized access to resource, a telephone security device and an information storage device incorporating biometric information. |
