I have technical information about the taggers and the infrared protocol they use on my wiki if anyone is interested:<p><a href="http://wiki.lazerswarm.com/" rel="nofollow">http://wiki.lazerswarm.com/</a><p>I also sell a device based on Arduino that connects to a computer over USB that allows for hosting and scoring of games:<p><a href="http://lazerswarm.com/" rel="nofollow">http://lazerswarm.com/</a>