You can use two Windows machines at once with a single keyboard and mouse without any special hardware. I had an extra laptop lying around that now connects with the same keyboard and mouse as my PC.
How-To Geek on MSN
How I turned my old Wiimote into a PC mouse (using two candles)
The Wii 'sensor bar' is a lie: How to turn an old Wiimote into a PC mouse ...
After decades of working with computers, I started to develop some wrist and arm pain a few year ago. So I switched from using whatever random mouse I could find for under $20 to using input devices ...
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