Cops are clueless after spotting a mysterious device being used by criminals to automatically unlock car doors across the U.S, CNN is reporting.

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In Chicago, surveillance video captured a man pointing a small box-like device at a car door when suddenly the door-locks pop open..

keyless-entry-vulnerabilityWithin seconds, the car unlocks, the alarm is disabled and the thief simply opens the passenger door and easily takes the valuables.

The device is believed to be some sort of electronic hacking mechanism that overrides the car’s computer system.

Police have no idea what it is, or exactly how it works.

There is at least one report of authorities in Texas apparently seizing one of the units and are in the process of testing it. Developing.