ZEROHOMZ on Instagram: "Lock History: historic genius engineering. Quick Summary: Today, we've gone digital--but door locks have come a long way since ancient Egypt, where wooden keys and locks were first used to protect homes. The Romans upgraded this with metal locks and more intricate designs. Then came key inventions like Robert Barron's lever tumbler in the 1700s and Linus Yale Jr.'s pin tumbler in the 1800s - both of which made locks more secure and harder to pick. Modern locks use keypads

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