Yeah I think there's a chapter on that technology in 'the Art of
Electronics' .... )

--
Brian Denley
http://home.comcast.net/~b.denley/index.html

wrote in message
...
Back in the 1950s or 1960s, a guy in Texas had a wooden leg.He installed
a radio in his wooden leg.Some people who have dentist work done to
their teeth/teeth fillings/whatever,,, can pick up at least one radio
station.They can listen to the station via their skulls.It is old
technology.
cuhulin