Start reading http://media.hacking-lab.com/scs3/scs3_pdf/SCS3_2011_Capkun.pdf http://media.hacking-lab.com/scs3/scs3_pdf/SCS3_2011_Capkun.... at page 16. They w

Start reading http://media.hacking-lab.com/scs3/scs3_pdf/SCS3_2011_Capkun.pdf http://media.hacking-lab.com/scs3/scs3_pdf/SCS3_2011_Capkun.... at page 16. They were able to perform an attack with a relay 8m from the key. I particularly like this implication they present: Relay on a parking lot  One antenna near the elevator  Attacker at the car while car owner waits for the elevator Also, the radio jamming attack described on page 10 is so simple but isn't something I've considered before. Basically you just jam the right frequency before the victim presses the 'lock' button and you now have access to their car (if they didn't notice).