We bought this to use on vacations abroad to tropical resorts and bigger US cities where theft of small items in rooms is sometimes a problem. Some American cities have laws and some hotel chains have rules protecting hotel workers from theft accusations to the extent they are basically immune from prosecution, they know it and it makes it open season on unsecured items. Onlines reviews of properties help but travel sites sometimes omit reviews of crimes committed against travelers, sadly. Generally there is a safe in the room and we use the safe sometimes with this inside it for added security of travel docs and wallets. We anchor it around the door hinge, sometimes there is clearance to do that and sometimes not. Other times we use it under the bed and anchor to the bed frame. Generally the safe is a better bet if there is one and there usually is. This product is extremely well made and will stop all but determined thieves. If a thief had a razor knife and wire cutters they would have no problem opening this quickly but that is unlikely. The one thing we really like this for is securing values in the car under the seat, anchor to the seat frame. Going to the zoo, beach, concert or wherever you don't wanna carry to many valuables on you they can be pretty safe in your car. We recommend this product and hope this helps you