About a week back we got a shipping pallet of cop equipment. There are hardened computers and laptops, flat panel screens, and data modems.
Panasonic CF-25: Soon to run Damn Small Linux
Pallet with mini-computers and boxes:
There was a box with about 30 of so of these nifty little boxes. They are Sierra Wireless 775 modems, capable of transmitting/receiving data over a cellular data network (I forget which one at the moment), and can pick up gps. They do require a sim card to send data, but at the very least, they will still function nicely as gps receivers.