Meet the AURA Band: a wearable device that lets you track body composition, hydration level, heart rate, and activity. The more active you are, the more coins you earn, which you can exchange for real discounts.
The Aura Band tracks fat, muscle, and bone volume. It tracks jogging, cycling, and other activities. The device has a 9-axis motion sensor, body composition processor, 3-color LEDs for notifications, heart rate sensor, and Bluetooth.