It’s the magicians number one rule. You must never reveal how the trick is done. If you do, you may as well consider your days numbered as a master of illusion. The same goes with giving someone the combination to a lock, as they only need to learn it once to be able to access anything it may be protecting.

If you’re an aspiring magician who likes to keep things under a little more protection than a conventional padlock, then why not give the Houdini Puzzle Lock a try? If you don’t know the trick, you can’t open it! This can be an added to a magic trick to make it look snazzier, and it will deter anyone from thinking they can get a five fingered discount on your goods. Of course, you don’t actually have to be an illusionist to use one as these are more of a novelty item than anything. There are two different types, the Dead Lock, and the Lock and Key. Each lock comes with two keys (in case you lose either of them), and one of these will cost you about $20.