http://ig.cs.tu-berlin.de/s98/1332l506/vl07/internetGovernance.html System developed by James Ze Wang of the University Stanford can compare picture samples, so that thereby a " Porno blocker " becomes possible. The system obviously compares outlines of the human body and koerperfarben, and can a picture comparison in 2 to 10 seconds execute. (daily mirror v. 14,9,1997, P. 31).