| 摘要 |
<p>A security device for credit cards, charge cards, cash cards and the like has a base (1), an integrally moulded top (2) partially extending along the length of the base and a lid (3) pivotally secured to one end of the base. A key pad (6) is recessed into the top (2). The lid has an electrically operated latch (18) operated by the key pad (6). A cartridge for the cards is formed of cardboard bent into a serpentine format to provide an upper compartment (8) and a lower compartment (9), each compartment being suitable for holding up to four cards each. The internal surfaces of the cartridge are coated with a pyrotechnic material and a heating coil (10) is connected to the cartridge. An authorised user of the device has a personal code which when inputted via the key pad opens the lid (3). Incorrect input of the code causes a piezoelectric bleeper (23) to sound. Two incorrect input sequences are permitted but on the third incorrect sequence the coil (10) causes the pyrotechnic solution on the cartridge to heat up and destroy the cards within the device. A water tamper device (22) is provided which will also cause the cartridge to destroy the cards if the device is immersed in water. A conductive inlay (24) is provided around the inside of the device so that if the inlay is open circuited by an unauthorised attempt at entry into the device by, for example, drilling or sawing, the cartridge will again destroy the cards held within the device.</p> |
