A lock is a tool people use to keep their homes and sundries safe. It is possible to see many types of locks from past to present.

It emerged with the settled life of key people. In the past, people used to close their doors with the skins of animals, but over time they needed to close them with hard objects, and thus the invention of the lock began. The first lock was made by the Egyptians. It is known that this lock example is 4000 years old and made of wood. Locks made of wood had pins of various lengths and opened with a key. The Egyptian Linus Yale produced the first modern pin lock. The first patent for the key and lock system was received in England in 1778 by Robert Barron. In 1784, Joseph Bramah patented the safety lock. While receiving the patent, it was also awarded the title of key and unlockable. In 1857, James Sargent succeeded in making the world's first interchangeable encrypted and non-encrypted key and lock. Henry Soref founded the Soref Master Lock Company in 1821 and patented the first padlock in 1924.

It can vary according to the purpose of using the locks in different areas. For example; Door lock, car lock, cabin lock, piggy bank lock, bicycle lock, phone lock etc. like.