Security system for electronic device

Details Security system for electronic device Security system for electronic device

1982-07-19

1983-12-20

Fuller, Benjamin R.

Registers

Stamp

235130R, 364900, G07G 100

Patent

active

044219776

ABSTRACT:
A secured housing for an electronic device having an electronic memory mounted therewithin is provided which has an access aperture which provides tamper proof security and electro-magnetic interference protection while permitting access to the memory for reading the information maintained in the memory. Opening of the access aperture disables the electronic device from further operation by unlatching a switch which disconnects the electronic device from its power supply while preventing relatching of the switch to reactivate the electronic device. Use of the access aperture provides a visible indication of access to the interior of the housing. In one embodiment of the invention, the electronic device is an electronic postage meter and the electronic memory is a nonvolatile memory containing postage accounting information.

REFERENCES:
patent: 3938095 (1976-02-01), Check, Jr. et al.
patent: 3978457 (1976-08-01), Check, Jr. et al.
patent: 4097923 (1978-06-01), Eckert, Jr. et al.
patent: 4202489 (1980-05-01), Schubert
patent: 4340809 (1982-07-01), Betcher

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