It's time for us to face the facts. Bluetooth is holding wearables back. The new Bluetooth LE standard is certainly a step up from earlier power-hungry versions, but the need for a wireless radio just isn't practical for many types of wearable categories. G-Wearables' Kickstarter campaign for the Goccia activity tracker offers an innovative alternative to Bluetooth: using light to sync via your phone's camera. The device communicates with your phone by flashing an LED when placed on your front-facing camera. It's a novel technique that enables G-Wearables to shrink the Goccia down to the size of a penny. The...