United Air Lines lost my bag at Denver airport. But, because of a clerical error in the United Airlines search request, they couldn’t find it. It had around $400 of new clothes in it!! After three days they said, “Do you know how big Denver Airport is?”, to me, as a reason it would never be found. With the KeySmart trackers map, and a google map, I showed them exactly where it was. They found it then. I would have lost out big time without that tracker. The new clothes were a one off unique purchase. These trackers work!!