Previously, there was no way to protect your camera bag from being easily opened & tampered with. The Gary Fong Gear Guard™ system Bag Lock means that you can lock your bag shut. The protective case keeps the clasp from being opened, thereby creating a deterrent to getting inside. You can lock with any small padlock, or secure the locked bag via cable to a solid post to deter thieves from taking the whole bag. Compatible with most camera bags with a quick-release buckle.