Lock and key dating
From the dawn of modern civilization, our ancestors developed a need to keep their belongings to themselves by using mechanical devices known as locks.
Initially, those locks were only simple knots made from rope or other materials (they were used only to detect if someone tried to open them), but as the time went on and new technologies were developed, true locks made from wood and metal started being used across the world.
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An assembly attached to the door contains several wooden pins positioned to drop into these holes and grip the bolt.
Instead of one simple lock they created multiple key mechanisms, increasingly complicated key designs, they obscured keyholes with detailed ornaments, created fake keyholes (with fake mechanisms inside), and more.
Progress finally came in 18th century, when technological advances finally enabled engineers to create small and sturdy mechanisms.
The moving parts of the locks were closely fitted and finished, and the exteriors were lavishly decorated. The security, however, was solely dependent on elaborate warding, the mechanism of the lock being developed hardly at all.Modern day historians are unsure which ancient civilization was first to create mechanical locks, and many believe that Egyptians, Greeks, and Romans developed those skins independently from each other.History of mechanical locks started over 6 thousand years ago in Ancient Egypt, where locksmith first managed to create simple but effective pin tumbler lock that was made entirely from wood.The Romans invented projections around the keyhole, inside the lock, which prevent the key from being rotated unless the flat face of the key (its bit) has slots cut in it in such a fashion that the projections pass through the slots.For centuries locks depended on the use of wards for security, and enormous ingenuity was employed in designing them and in cutting the keys so as to make the lock secure against any but the right key (warded locks have always been comparatively easy to pick, since instruments can be made that clear the projections, no matter how complex.
Onerefinement was to conceal the keyhole by secret shutters, another was to provide blind keyholes, which forced the lock picker to waste time and effort.