These locks work great! The only problem is keeping them straight (the wife has one with her code, I have one with my code), but I just marked them with a magic marker and we're fine. We're going on a long cruise soon, taking much more luggage than usual, and so I'm buying more of these locks. Obviously, they are cable locks and the cable could be cut with a small bolt cutter so you could never rely on these to protect you outside of airports and hotel rooms. However in places where you don't want snoopers, let alone thieves, these locks work great to deter.