Lock bumping is an undetectable lock picking method that criminals can use to get inside of your home or business. What the theif does is shaves down a key which fits into the cylinder of your specific lock, from here all they have to do it place the key inside of the lock and hit the key with an outside force and they are able to open the door as if they had a real key. This is a method that with just a little bit of training can leave your home or business susceptible to break-in. There are now specifically built locks that have mechanisms inside of them that are designed to prevent bump keys from working.