Security Flaw in Automotive Keyless Entry

Recently there was a security exploit identified in automotive keyless systems. 

Normally, the car sends out an RF ping to the fob on a low frequency, to which the fob responds on UHF.  If the system determines that the fob is nearby AND a hand is detected by a capacitive sensor, the car unlocks.  Also, if the fob is inside the car AND the ignition button is pressed, the car will start. 

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Spencer Webb