It may sound like an impossible dream, but two designers in London have built functioning prototypes of GravityLight, a cheap way for people in developing countries t0 light homes, recharge batteries, or power a radio.
A few reviewers did far more than test out the console and play a round of virtual tennis — they took the entire thing apart.
Waiting for your Pebble to drop? Pebble’s lead designer has cancelled a speaking appearance in October to stay in Asia and finalize the product.
Adults have FitBit, Fuelband — maybe someday again — Jawbone UP. Kids now have Zamzee.