So many fitness trackers — and so few of them that can do more than one thing. The Atlas Fitness Tracker promises to track everything. This wrist-mounted device features an active display, a heart rate monitor, x, y, and z axis tracking and advanced software. It knows what exercise you're doing, and can also give you feedback on whether you're cheating or using proper form. It's waterproof, so it can also track swimming exercises, and knows the difference between breaststroke, freestyle, and everything else. In addition, it can actually learn new exercises, so whether you're training at your local gym of lifting boulders and swinging swords in the wilderness, it can adapt. Try that with your average clip-on sensor.
No, it's not an eyeball-mounted version of Glass. Instead, the Google Smart Contact Lens aims to help those with diabetes manage their disease by using a tiny wireless chip and sensor that are embedded in the contact and constantly measure the glucose levels in the wearer's tears. Obviously they're still in the testing phase — they're even considering integrating tiny LED lights to indicate when levels spike or fall below certain thresholds — but for those suffering with diabetes, it can't hit the market fast enough.