Not to encourage technological paranoia or would-be kidnappers, but it's worth noting that some of the latest pint-sized GPS receivers have data logs that can be uploaded wirelessly via Bluetooth -- meaning of course, they can be hidden in somebody's car/baggage/whatever and then, sometime later, you can see everywhere they've gone. Y'know, in case that Subway dude wants to hold Brad for ransom....
_________________________
-- DLF