Author: Fillco
Subject: Auto Theft
Posted: 26 Jan 2014 at 10:54pm
Thats right, the RFID is of course the inductive coupling, I mention, but electromagnetic energy is required to excite the device, thus the close coupling by placing near the steering column in the event the keyfob battery is flat. Keyless start actually uses a very short range transmitter/receiver inside the car but requires a battery in the fob to transmit a signal back to the car.
As a matter of interest, an RFID that would operate over a few feet to allow keyless start to work with the fob in the pocket, could more than likely render a pacemaker and most of the electronics in the dash inoperative.
Subject: Auto Theft
Posted: 26 Jan 2014 at 10:54pm
Thats right, the RFID is of course the inductive coupling, I mention, but electromagnetic energy is required to excite the device, thus the close coupling by placing near the steering column in the event the keyfob battery is flat. Keyless start actually uses a very short range transmitter/receiver inside the car but requires a battery in the fob to transmit a signal back to the car.
As a matter of interest, an RFID that would operate over a few feet to allow keyless start to work with the fob in the pocket, could more than likely render a pacemaker and most of the electronics in the dash inoperative.