Lockpicking depends on the theory that most locks were manufactured in a faulty way. Tiny inaccuracies of less than a millimeter can be exploited in order to pick to the lock. The most popular technique depends on the fact that if torque is applied to the tumbler, the pins will catch on the tumbler. Once all pins are caught, the tumbler will turn. Various tools are used including professional lock picks, electronic lock picks, and home-made ones as well. A skilled lockpicker can open an average lock in around 30 seconds.