As my girlfriend works her way back home, I'm still finding adequate location information with Tile and its app. Not only has the Tile with her computer bag been located at each airport she's flown through, including her current location at DFW, but it's been located several times at other locations, including her hotel Wednesday and on the road from Barstow to Ontario yesterday.
I'll give it one final test this afternoon when I pick her up at the airport. The app is supposed to give off increased signals as the bag gets closer, a nice feature if you're waiting for checked luggage. So far, everything has worked as well as I expected, and I'll definitely use it next month when I go to Scotland. I hope I don't have lost luggage, but it's nice to see that Tile provides me with a tool to help me find it.