Human contact switch?

[arcade_tech]

i was wandering if anyone would be able to help, i am currently building a robot for a college project and a safety meaure i want to incorporate is human contact causes a power cut.

does any one know of any circuits that i could use to make the whole of robots structure (which is entirely metalic) sensitive to human touch?

Any advice is greatly appreciated

Cheers Will

 

[Russlk]

Check out the QT110, QT112 touch sensor.
**broken link removed**