Locks are one of those items we use every day without thinking about it. Of course, they’re useless without keys to open them. Naturally, the histories of locks and keys are intertwined. These combined histories go back to Ancient times yet remain unfinished. As technology advances, locks and keys continue to be transformed. Even so how did it all begin? Let’s go find out!
ANCIENT LOCKS
Some say the oldest locks are estimated to be 6,000 years old. These keys were from the ancient Babylonian Empire and Egypt. Others say the oldest locks are the 4,000-year-old examples found near the ruins of Nineveh in ancient Iraq.

Egyptian keys used pegs hidden in a wooden block and looked similar to a toothbrush. These wooden keys and their matching wooden locks were easy to damage. The Romans later improved the Egyptian design by using metal instead of wood. Rich Romans would wear keys like rings on their fingers thus displaying that they were not only wealthy enough to afford locks and keys but that they had something valuable enough to lock away.
Warded locks were also a Roman invention. Wards are ridges inside a lock that only allow keys of the right shape to open the lock. This meant that locks had to be opened by a specific key and could no longer be opened using just any key. Keys of this era began to take on the familiar skeleton key shape.
ADVANCEMENTS
In the Middle Ages, warded locks were created for the first time fully out of metal. Locksmiths at the time focused on making warded locks difficult to pick. Instead of working to advance the security of locks themselves, however, locksmiths made multi-key locks, fake keyholes or complex keys.
Robert Barron and Joseph Bramah took up the task of creating new locks in the late 18th century. Barron’s patent used two levers which had to be lifted to separate heights before the lock unbolted. Jeremiah Chubb improved this design in 1818 by adding a retaining spring that stopped a lock from opening if the tumblers went up too high.

With the help of Henry Maudslay, Joseph Bramah created a lock, a few years after Barron’s invention, that would be unpickable for decades. It used a cylindrical key with specific notches in it. The notches would slide metal plates into an exact spot before the lock could be opened. These locks still exist today.
In the 19th century, Linus Yale Sr. patented a lock similar to the locks of the Ancient Egyptians. It was a pin tumbler lock that needed a key with ridges of varying heights. The ridges had to match up with pins in the lock correctly before it could open. Linus Yale’s son, Linus Yale Jr., improved on this design by adding pins of different lengths and seated edges on a flat key. Yale locks are still common today.
KEYLESS
Today it’s not uncommon to see pin pads and other mechanisms instead of traditional locks As technology continues to advance so do locking mechanisms. Keyless locks are available, but traditional locks continue to be used as well. In the future locks might use artificial intelligence. Who knows what advances could be made to keys, locks and other locking mechanisms?
MY THOUGHTS
I think it’s amazing that something as simple as a piece of metal with notches on it can be a technological advancement. Honestly, I’ve always loved keys. They’re just good to look at. As for security, I’m not sure if combination locks, keypads or old-fashioned locks and keys are best. What type of lock do you prefer? Let me know in the comments!
CONCLUSION

The people of Ancient times wanted to lock away their valuables for safekeeping. That desire is still around today. For that reason, locks and keys were invented and improved as people’s needs (and wants) for security changed.
Today, locking mechanisms are advancing. Keys may become a thing of the past if keyless technology takes over. The next time you open your door or start your car, think how that simple action wouldn’t be possible without the inventions and advancements of the past or how it could change in the future.



























