Lock master Bosnian Bill published this enlightening video on suitcase security over a year ago, but it has only gone viral now with over 600,000 views! Bill explains that it doesn’t matter how good your suitcase zipper lock is, all a thief needs to break into your baggage is a pen. By simply puncturing the teeth of the zipper, a criminal can get into your bag, take your belongings, and then simply close it as if no one was ever inside. His only advice is to travel with a chest that has no zipper, and use a big, strong lock so no one can break in.