This seal is easy to use and is Pick Proof unlike traditional locks. Seal it, remove the printed number tab so you can compare the number on the tab to the number on the seal when you collect your bag to ensure it is the same seal. Then simply open it by hand with no tools, keys, or combos required. Basic colored seals without a Unique ID can be cut off and replaced and you will never know it. This is especially not good if someone places something in your bag as it appears as if you packed it. Use this seal with a Unique ID so that cannot happen to you. Uses include: Locking your luggage for Air, Cruise, Bus, and Train travel. Also great for gate checked bags at airport - your walking down the jetway and they make you check your bag before you step on the plane. It is a great feeling to slip this seal on before you hand your bag to the luggage handler to store it. Also use it for bags left in your Hotel Room or given to the concierge desk, anytime your bags are in someone else's possession it is comforting to know that they cannot get in it without your knowledge. This will deter most, if not all, thieves as they do not want to be detected and caught. Good for securing drugs on a medical Crash Cart as well. Anything you want to secure and ensure it is not tampered with.