Not just for lost or misplaced items. Ever had something valuable stolen? Make it easy for the police to get it back .. just give them the tracking info, and let them go get it. So much of a stress put at ease. These tiles are incredibly small and come in various sizes to be attached to (or inside) just about anything. The square tile, I put into a foam pocket, and it is the perfect size to fit into the components section of a guitar. My Guitars get moved, stored, and transported by dozens of different people, non-stop, and at venues they're easily pilfered. I have since put them in most of my guitars, and hidden them in every vehicle. The criminals would have to steal the item, change location, find the tile and remove it, then change location again before I can share the info with the police, 90% of criminals aren't that good.The tile tracking system is incredibly versatile and world-wide. On top of that - it is incredibly affordable. So, it doesn't just use your phone to Bluetooth track, it uses EVERY phone in the system (millions) to track. Once you've entered your info into the 360° tracking system, you become part of the system for tracking these tiles. I can be in Iowa, and track a tile in Arizona and another in Florida, all at the same time. The Bluetooth system updates location at indeterminate intervals, roughly between every 5 and 30 minutes, and the batteries last up to 3 years. For the Bluetooth to work, the tile has to be within a hundred yards or so of any phone in the system. If a tile is out of range, it gives the last known location. Rural areas are a bit more difficult, but in urban areas - no worries at all. In my area, there are over 2,000 phones within a 1 mile radius, that are in the system. That allows for pinpoint tracking, whether I'm in the area or not. Just share the location with the police, and let them do their thing. These tiles are EVERYWHERE in the modern civilized world, no matter the city, country, or continent, the 360° tracking system works. And there is no additional cost beyond the purchase of the tile. I love these things !!!!