Invention 41: Kidnap Alarm

This is an invention which was a mere footnote or addendum to some articles I wrote, so that it may have gone unnoticed. I designed various embodiments of "body detectors" -- and found that these activated doorknobs, worked through glass, detected feet on grass, and a host of things besides. Particularly interesting was that they reacted when one human body touched another. I had this working, but not with perfect reliability. If this discovery were perfected, one would have an anti-kidnap alarm. As soon as a kidnapper touches someone, an alarm is triggered, or a signal is sent. OBSERVATION: It works like this: instead of detecting a human body, one turns the human body into a sensor, which detects another human body ...