Straight from the "if we can do it, we should" dept, comes the latest in personal tracking devices: http://www.digitalangel.net/index.htm

Applied Digital Solutions has developed a new technology that we believe will revolutionize E-Business security, emergency location and medical monitoring and commodities supply chain management (food safety). That technology has been named Digital Angel?. ADS is actively seeking joint venture partners to develop and market this technology. We expect to produce a prototype of the device by the end of 2000. We believe the potential global market for this device - in all of its applications - could exceed $100 billion.

Basic Features of Digital Angel?

The idea behind the initial version of Digital Angel[tm] is to build a microchip that can be worn close to the body. This microchip will include biosensors that will measure the biological parameters of the body and store this information.

[..]

The chip will be equipped with a micro battery. This battery will be self-rechargeable taking energy from the body or from its surroundings. All these components will be combined into a unit the size of a dime.

[..]

The unit can be turned off by the wearer, thereby making the monitoring voluntary. It will not intrude on personal privacy except in applications applied to the tracking of criminals.

Heh.

Digital Angel[tm] measures bodily parameters. It does not interact with the body chemically or biologically. Designed to be completely harmless, Digital Angel will not interfere with bodily functions in any way...

at least in this version. -- Eric Murray Consulting Security Architect SecureDesign LLC http://www.securedesignllc.com PGP keyid:E03F65E5