i don't always put things in the same place when walking in the house. These little trackers work perfectly with my iphone. Setup was so easy and quick. Each tracker comes with a case, key ring, and lanyard, so I immediately slapped them on my keys, wallet, luggage, and—my remote control. I’ve already used one to find my keys several times. With the time saved looking for things, these trackers are a must have for the price. They definitely help eliminate some unnecessary hearted discussions about who misplaced something.