EXTRA SECURITY -Secures hotel room safes - This added lock created a barrier that only you can unlock to get access to the safe. THEFT PREVENTION - Those with a hotel master override key or code for the safe can't open the safe because the is in place and prevents the door from swinging open. USE YOUR OWN LOCK - A lock is included but we suggest you use a more robust padlock for additional security HOUSING IS A HIGHLY EFFECTIVE STURDY PLASTIC - metal is too heavy Use on HOTEL SAFES, HOME SAFES and GYM LOCKERS COMPACT FOR TRAVEL- Can be carried on airplanes or in luggage with included carry pouch.