> http://availabletechnologies.pnl.gov/securityelectronics/rftags.stm > > Take a look at this Web Page. Not bad, but the truly passive tags can still only be read "up to" 10mtrs away. All bets are off when you start using batteries and/or higher frequencies, then it's much easier. ;-) michael -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads