McLaren_Field wrote:
Back in the early 90s we were offered proximity readers for access control that had as an option transmitters that were bonded into small glass beads of the type that are now used for dog micro chipping - the manufacturers were actually seriously suggesting that a similar thing could be done with human employees.
The manufacturers were Chinese though.
However outlandish a suggestion you can bet someone has made it seriously at some time. Nothing about the Chinese suprises me. One look at a menu from any resteraunt in China makes you realise that they could try anything.