I recently had a requirement to build a visitor badge system but didn't have any cash. So i created my own software! I build what I am calling for lack of a better term phpvisitorbadge. Runs on PHP has a SQL backed and will catalog and log your visitors from multiple locations and also give you a sign out ability. I actually reverse engineered the idea from someone but came out with a dandy product. So if you have a LAMP like install sitting around let me know what you think. IN the next week if I get time I will set up a demo site with the server software running. I added some security to the page but not a lot as its intended for internal use only. However I am curious on how much people could hack it if I let them.

http://www.kellykeeton.com/phpvisitorbadge/