Gone in Less Than a Second

Do not let Samy Kamkar near your car. Kamkar has built a new device that is about the size of a wallet and can intercept the codes used to unlock most cars and many garage doors.

The device can be hidden underneath a vehicle and when the owner approaches and hits the unlock button on her key or remote, the device grabs the unique code sent by the remote and stores it for later use.

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.

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