1. Cruise Control :: the system used to maintain a desired speed while driving.

2. Lose It :: a mobile application to track caloric consumption and exercise to help users reach a target weight.

3. Pedometer :: the classic pedometer that measures the number of steps a person takes.

4. Dynamic Speed Displays :: speed limit signs coupled with radars that display in real-time the car’s actual speed. good article here from wired.

link.