Locksmith ; A locksmith is a person who works with locks, keys and security systems. Locksmithing is the profession of a locksmith. Locksmiths fix broken locks, make keys, and install security systems like alarms.

It all began in Ancient Egypt and Babylon, before 4000 years ago. Back then, locksmith created wooden devices that used tin tumbler principle to avoid free movement of the door bar. The pins of the lock could be moved only with the use of large and cumbersome wooden key that was inserted into lock and pushed upwards, which moved internal lock pins and unlocked doors. The oldest of those locks were discovered in the ruins of the Assyrian Empire, in the city of Khorsabad near Nineveh. Scientists and historians , both agree, that this wooden lock was created around 704 BC.

This days , many locksmiths work from their shops or from their vehicles (mobile) and some of them focusing only in one niche or more (automotive locksmith/ residential locksmith / commercial locksmith / emergency locksmith ) . being a locksmith which provide all this services required multiple skills and tools.