hot to trot?
-Kevin
On Mon, 23 Aug 2004 09:27:12 -0400, Ben Doom <[EMAIL PROTECTED]> wrote:
> Having skimmed through the replies, I think everyone is missing
> something fundamental:
>
> RFID chips (like the ones in the Mexican Police) work from external
> power sources (they respond to radio signals using power from the
> signal). Therefore, they have very short ranges (not even Bluetooth :-)
> ). Homing devices, per se, require relatively large power sources to be
> able to broadcast over a useful distance -- say, a mile.
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