PIXIE

US$50 for two “Points” getpixie.com Described as “Pokemon Go for your iPhone”, this will ensure you never lose your iPhone or keys again. Pixie “Points” come in packs of at least two, with one attached to your phone (order soon and get a free iPhone case; Android not currently supported) and the rest stuck to your favourite possessions. Tracking items works using augmented reality – rather nauseatingly branded “Pixie Dust AR” – overlaying the “lost” item over the real world using the free app. It works within 150ft outdoors, or 30-50ft indoors, and when you get close, it beeps until you have found your stuff.