Amp StripTired of bulky fitness trackers? The Amp Strip packs an ECG sensor (for heart rate), an accelerometer (for movement and activity tracking), and a thermistor (for measuring your skin temperature)—and it's no bigger than a Band-Aid. It attaches to your body using a sweat- and water-resistant adhesive that can last up to a week, and you can connect it your favorite fitness apps on your mobile device with Bluetooth 4.0.
