Nuelproducts on Instagram: "Did you know that door lock technologies date back over 4,000 years to ancient Egypt, where the first pin tumbler locks were made from wood? These early locks used wooden pins and required a matching wooden key to lift the pins and unlock the door. The Romans later advanced the design by using metal and adding complexity with warded locks, which required a specific key shape to bypass internal obstacles. In the 18th century, Robert Barron invented the double-acting le