Appeal No. 1998-0183 Application No. 08/413,040 The invention is related to a device for protecting data transmitted by a facsimile machine. The device is a self-contained unit comprising a lightweight, detachable, portable housing which can be attached to a free standing facsimile machine or directly to a telephone line. Mounted within the housing is a keypad and a visual display associated with the keypad for transmitting command signals to electronic circuitry mounted within the housing. The electronic circuitry allows encryption of the data received by the facsimile machine and storage of the encrypted data for subsequent retrieval upon command of the user of the device. When a retrieval signal is transmitted to the electronic circuitry, the data are either transmitted in an encrypted form to a receiving facsimile, where they are decrypted in accordance with the matching code, or are decrypted by a similar device attached to a remote (receiving) facsimile machine. The invention is further illustrated by claim 1 below. 1. A device for protecting data transmitted by a facsimile machine, comprising: a lightweight self-contained detachable, portable housing provided with means for encrypting 3Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007