Quote:
Originally Posted by fastball
No, that's not how it works.
Yes the transponder is always transmitting, but it's also always receiving as well (hence the term "transponder" - it transmits AND responds to the handshake frequency the car puts out to the fob - for the car to start, when you press the button on the dash the car looks for the keyfob's frequency, then sends back it's own frequency to the keyfob for a "handshake", THEN the ignition process will begin only when they agree on the frequency checks).
You'd need a $20,000 spectrum analyzer to do what you're talking about. I know because I use one almost every day at work. Keyless ignition systems use what us engineers call FH - Frequency Hoping. Constantly changing, sometimes up to 12 times in one second. The RFID you talk about is a different beast from FH transponders. RFID does not employ FH, as they are fixed frequencies.
I'd like to see any Joe Blow off the street try to buy an FH spectrum analyzer to begin with. So your idea that they're the "easiest cars to steal" is a myth.
You've been watching "Gone in 60 Seconds" too much.
|
^This. I've been posting on many car forums dealing with the Charger and Challenger for years and the only time I've read about thefts is when someone lost their key and a thief found it or the car was simply towed away. I know plenty people with push button cars from other manufacturers and I've never heard of theft being a problem dealing with RFID.