Billy Key

A Billy Key is a specialized tool used in the locksmithing and security industries, primarily for manipulating and opening certain types of pin tumbler locks, particularly those commonly found in vending machines, coin-operated devices, and some older types of door locks. The term "Billy Key" is often used colloquially and may refer to a variety of different tools that achieve a similar purpose.

The basic principle behind a Billy Key involves bypassing the need for a properly cut key by applying direct pressure to the pins inside the lock cylinder. Unlike picking tools that manipulate each pin individually, a Billy Key generally attempts to manipulate multiple pins simultaneously. This can be achieved through various designs, ranging from simple pieces of shaped metal to more complex devices with adjustable components.

Due to their potential for misuse, possessing or using Billy Keys may be restricted or illegal in certain jurisdictions, especially if used without proper authorization or for illicit purposes. Their legality often depends on the intent and context of their use, as legitimate locksmiths and security professionals may require such tools for their work.