I misplaced my car keys (again). This time the key fob was attached to a Tile tracker. The iPhone app showed the keys being close but I couldn’t hear the chime so I assumed they were outside. The app displays a small green circle on a map and the tile/keys is located within.

In the screencast above the blue dot is me, moving around relative to the circle. I hurried this demo a bit and the app was playing catch-up. The device and the app work better in practice than my demo suggests. I’ve been impressed so far.