4) Has security features; the ability to compare frames at high-speed to "motion detect" as a percentage of change from 1% to 99% Maybe there is other security features that can be done but this is one that I know about supported on webcam32 from Kolban
Probably not a complete solution but it might be an important component: <http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome>
