The application for 3D glasses can mean becoming somewhat independent of all the different stereoscopic shutterglass 3D solutions out there.
There are a whole bunch of different 3D active shutterglass solutions out there. They typically use VGA connections to sync on, or sync internally with a graphics card driver.
The sync signal reaches the glasses via a special connector on some graphics cards, or an IR transmitter in the display or in a USB dongle (like NVidia 3D Vision).
Lately, the use of special displays or proprietary dongles is the most common since VGA is not used for most 3D display solutions anymore.
With this project, all you need on the software side is a driver (this could be a 3rd party one like Tridef/IZ3D or a proprietary one like NVidia 3D Vision) that can drive a suitably fast LCD/CRT/projector/whatever in frame-sequential mode. Then, using this sync extractor and a suitable set of shutter glasses, you can handle everything else yourself.