iFind Self-Powered Locator
Bluetooth locator devices are nothing new, but iFind is the first one we’ve seen that doesn’t need batteries. It harvests ambient electromagnetic energy – from routers, phones, TVs etc. – and converts that into usable power.
Crowdfunded projects pose a degree of risk for buyers, so be sure to do your research and fully read the seller's detailed description and production plans before plunking down your hard-earned money.