The earliest known lock and key device was discovered in the ruins of Nineveh of the ancient Assyria. Egyptian developed wooden pin lock which consisted of bolt; door and key. When the key was inserted pins within the fixture were lifted out of holes for move out lock. When the key was removed the pin was fell into the bolt preventing movement. Lock and keys were invested from western world. The first all metal locks invented between the years 870 and 900, and metal lock are attributed to the English craftsmen. The key was invented by Theodore of Samos in the 6th century BC .In the late 18th century when the industrial revolution is on the onset locks and keys were manufactured with increasing complexity and sophistication.
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There are several lock designs.
Dimple, Disk trainer, Combination, Tubler, Electronic, hybrid, lever, magentic, Pin tumbler, wafer, warded lever tumbler.
Dimple: A pin-tumbler design based on uses a horizontal keyway rather than the traditional vertical style. High security dimple locks have security features that most traditional pin tumblers don’t. Dimple lockset also called telescoping pins.
Disk trainer: In disk trainer lock uses flat metal tumblers that interface with a sidebar to prevent rotation of the plug. It is Separate from wafer designs because discs are usually rotated rather than lifted.
Combination: Combination lockset range from low to high security. Combination locks Hs one or more number dials and then open the lock when the correct number dialed. They are often easy to shim open. Combination is a type of padlock.
Tubler: A pin tumbler lock design based with pins arranged in a circle and accessible from the face of the lock. Pin lock developed into Egyptian world.
Electronic: An electronic lock word means electric current is uses for access security system. Electronic locks may incorporate various digital access controls such as biometric. Electronic locks usually provide a auditing and key control capabilities, but generally are not any more secure than traditional locks. Many electronic locks are also combination locksmith has two types first is key card and the second is smart locks.
Hybrid: Hybrid design is very popular and it is a best securitydevice. Hybrid lock is a combination of all locks. Many high security designs are hybrid design.
Lever tumbler: The lever tumbler lock is still currently used today but it is one of the oldest designs. The lever tumbler lock, which uses a set of levers from moving in the lock, was perfected by Robert Barron in 1778 and lever tumbler lock was greatly improved by Jeremiah Chubb in 1818.
Pin tumbler: The pin tumbler lock uses a set of pins to prevent rotation of the plug. Pin tumbler locks were range from low to high secuirty.Dimple and axial tuber design were modified with pin tumbler design.
Wafer: Wafer design uses flat metal tumblers to prevent rotation of the plug. Wafer locks range from low to high security and the vast majority of wafer locks being low security.