When you flip the optical mouse over, the red and blue lights should turn on. This light has the role of a sensor that recognizes the movement of the mouse, but by applying that sensor and modifying ...

If your pointing device is a mouse, turn it over. The chances are you’ll see a red LED light if you’re not seriously old-school and your mouse has a ball, this light serves as the illumination for a ...

In this video, researchers at Carnegie Mellon show how an unassuming sensor in your smart watch is capable of much more than you’d think. The sensor, an accelerometer, is there to track your arm’s ...