Introduced in the late 1990s, optical mice superseded mechanical mice because their sealed bottom ... an LED or laser, and a CMOS sensor detects the light reflections as the mouse is moved.

The main idea Is to attach a rotary knob to the bottom of the mouse, with the optical sensor ... like adding a machine vision powered laser blaster. While many may think the Atari 2600 was the ...

There are wireless computer mice, touchpads, TV remotes, and laser pointers … and then there's the Xring D13. It combines all of those tools in one wireless device, which could be yours for US$109.