How DO those work?!
How DO those work?!
Do they ping a radio signal, or can I merely use my digital camera to, ahem, copy one from a car found on a public street?
They are radio transmiters that transmit a certain ID. The McDonald's would have a receiver that could decode this ID and then bill the proper account. These tags are used throughout the Northeast called "EZPass," where the same tag works on the toll roads of the several states involved.
I suppose cloning could be done, but would not likely be very lucrative. On the other hand, I did read about people using Palm Pilot's with infrared signal capability to intercept and copy the remote door lock signal for cars in Europe. (Europe doesn't use radio waves for things like we do. To open your car, you have to point your fob directly at the receiver near the rearview mirror.)
SD