08-19-2012, 04:14 PM
I knew a guy who had a way to make what he called keytaps, which were universal-cut keys designed to jar tumblers into opening. The premise was that the keys were cut such a way they went an eighth inch deeper into the lock, and were cut with certain ridges that if you inserted the key and then struck it with a rubber or wood mallet while turning it it would make the tumblers "jump" and spring the lock. I didn't describe it very well but I saw it work and actually used the process myself once when one of my guys locked us out of his apartment while he was trashing the joint.