Samy Kamar can compromise a Car lock in 60 Seconds and your Garage door in 10 Seconds. All with $30 hardware.

Convenience always comes with a price.

However, the device need to be placed close and the attack works only after the owner attempts unlocking.

Form the article:

Kamkar has built a new device Known as Rolljam, the device takes advantage of an issue with the way that vehicles that use rolling codes for unlocking produce and receive those codes. Kamkar said that the device works on most vehicles and garage doors that use rolling, rather than fixed, codes.

This is the second time in the last few months that Kamkar has taken aim at the codes on garage doors. In June he released research that showed he could open any garage door that uses a fixed code in less than 10 seconds


For More info:
https://threatpost.com/gone-in-less-than-a-second/114154