1
Noel D Matchett, Brian D Kehoe: Continuous biometric authentication matrix. Armstrong Westerman Hattori McLeland & Naughton, July 20, 1993: US05229764 (401 worldwide citation)

A system activating and analyzing the biometric data from a plurality of biometrically-oriented personal identification devices at intermittent intervals selectively allows or prevents continued use of a particular protected system or device by a particular individual. The system is a continuous bio ...


2
Noel D Matchett, J Neil Birch: Fraud prevention system and process for cellular mobile telephone networks. Wireless Security, August 2, 1994: US05335278 (198 worldwide citation)

An improved mobile telephone system, including a process and apparatus for detecting fraudulent requests for roamer cellular telephone services before the requested service is granted. The improvement comprises a distributed, readily updatable fraud prevention processor which facilitates a plurality ...


3
Noel D Matchett, John E Hershey: Cryptographic system with enhanced encryption function and cipher key for data encryption standard. Westerman Hattori Daniels & Adrian, August 15, 2006: US07092525 (6 worldwide citation)

An enhanced cryptographic system of high security for a ciphering of a block of data bits under control of a cryptographic key and for generating a one way transformation of a block of data bits with said cryptographic system being based upon the traditional DES but utilizing a variable permutation ...


4
Brian D Kehoe, Noel D Matchett: Audio surveillance discouragement apparatus and method. Armstrong Nikaido Marmelstein Kubovcik & Murray, July 30, 1991: US05036542 (4 worldwide citation)

An audio surveillance discouragement apparatus or system comprising, at least, first generating device, second generating device, first speaker and second speaker. The first speaker is coupled to the first generating device, and the second speaker is coupled to the second generating device. The firs ...


5
Noel D Matchett, John E Hershey: Cryptographic system with enhanced encryption function and cipher key for data encryption standard. Armstrong Westerman & Hattori, May 2, 2002: US20020051534-A1

An enhanced cryptographic system of high security for a referable ciphering of a block of data bits under control of a cryptographic key or for generating a non referable ciphering of a block of data bits with said cryptographic system being based upon the traditional DES but utilizing a variable pe ...