Police Concerned About Rise in Use of Bump Keys The keys - which are modified to be able to open many kinds of locks -- are increasingly being used in burglaries across the country, police say.

Using tension tool and a wave rake for a few seconds, the lock can be opened and with relative ease. A test using a bump key also produced similarly rapid results.

GMA ordered bump keys online for use in its demonstration. An entire set of bump keys — containing 20 keys for locks from a variety of manufacturers — cost $50.