Terry as early as 1978 envisaged a world where electronic tags would help us to keep our world organised and safe. He called this development “Proxi” in short for “Proximity” of an object from a reader. Terry already at this stage in his career knew that this would only be possible with tags that transmit an identity of an object that could be read from a distance as he demonstrated with his electronic number plate identification system. This was however a major task as the technology available to use was very limited. Office computers in those days where 8bit machines and most of us where familiar with the Commodore 64 Computer for home use. Due to the technology limitations he used resistors and designed a unique pulse width modulation system that transmitted a hard configured identity. This was then transmitted and read by a similar read device.
Below see photos of the invention and the hand drawn diagrams of how the application would work.