Harry Miller was the son of a master locksmith. He proved locksmithing was in his veins after cracking a burglar-proof safe at the White House, whose combination died with the only person who knew the combination. As a result, Miller found himself teaching “the science of lock manipulation” to spies and law officers during World War II. He acquired locks to use as teaching tools. Over the years, his collection grew as he traveled to hundreds of foreign embassies, horrifying safe owners as he opened their vaults with little difficulty. Harry eventually established the first locksmithing school, the Lockmasters Security Institute (LTI), with a collection of 12,000 locks. LTI still offers training for a specialized lock, covert methods of entry, and tactical locksmithing to those interested in the craft.These historical locking devices Miller collected are on display here at the Museum of Physical Security. Miller’s collection here at the Museum of Physical Security spans from the 13th century to modern-day showcasing some of the most unique locks from all over the world. Our resident historians can answer any questions about the items in our collection, and we invite you to browse this impressive display.