US Government As Represented by the Secretary of the Army

William F Otto, Deceased

Debbee J Jordan

Miles E Holloman

Lorinda R Otto, Heiress

William F Otto, Jr, Heir

Robert A Otto, Heir

Stanley P Patterson

An Identification-Friend-or-Foe System Using Variable Codes (IFF System) lizes variable codes and pre-selected encryption/decryption technology to querry potential targets as to their battlefield affiliation and also to identify itself as a friend to a potential attacker. The IFF System performs a querry by sending a narrow laser beam to the potential target which is accompanied or closely followed by a radio frequency (RF) wave modulated with encrypted identification information. If the potential target is also equipped with the IFF System and in possession of the valid code, then the received RF wave can be decrypted to reveal the potential attacker as a friend. The potential target, then, encrypts its own identification information using the same code and transmits it via RF wave to the potential attacker. Thus fratricides may be avoided.

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Huntsville, AL, United States of America

William F Otto, Deceased