Sunglasses that alert your phone if you lose them

You finally find that perfect pair of sunglasses, convince yourself to shell out an absurd amount of money to buy them. Then you leave them in a public bathroom, never to be seen again. A new pair of sunglasses from Tzukuri fixes that problem. These iBeacon-powered shades send an alert to your iPhone when you leave them behind.

Tzukuri’s secret is a 3mm-wide bluetooth low energy chip embedded in the temple of the acetate sunglass frames. Once you’ve paired your sunglasses with your iPhone, the Tzukuri app sends an alert once your phone gets 16 feet away from your glasses. Further alerts come in at 32 feet and 50 feet, unless you dismiss the first alert to tell your phone “I’m not wearing my stunner shades today, thanks.”

It also works the other way: if you walk off and leave your iPhone on the counter, the app will realise your phone is sitting still while your sunglasses move away, and trigger an extra loud ring from your abandoned phone. The app can distinguish when you’re at home or work, so you don’t get blasted every time your phone and shades part ways.