If you're in a profession where it's important that people be able to locate you instantly (a paramedic or fireman, for example), or a hobbyist given to visiting remote areas, wearing a GPS dot may be either a desirable option or even mandatory for you. However, it means batteries, and if the batteries wear out, the GPS goes off - until now. Cats Eye has very sensibly rigged up a solar powered battery for the trackable clothing, so you can just put it on and forget about it. Next generation should be fully washable and waterproof, making the system virtually autonomous. [GT]
Cats Eye tracking device [via Technovelgy]
Related stories: Bagsy some solar | Solar powered Mars Explorer Kit | Solar powered fan hat
From: BEST OF 2008: Eco-friendy and sustainable shoes