Bob Proulx was asking about proximity locks at the last Hacking Socity.
This isn't proximity, but RFID:
http://www.thinkgeek.com/gadgets/security/77af/
--
Regards, tummy.com, ltd
Evelyn Mitchell Linux Consulting since 1995
efm at tummy.com Senior System and Network Administrators
http://www.tummy.com/