The fact that the WWW is spread worldwide, gives enormous possibilities for different sorts of on-line remote controlling, measuring and surveillance activities. If combined with visualization, what comes out can be called custom multimedia.

By combining different techniques such as server-push, client-pull, CGI scripts, Java and JavaScript, developers can

• put cameras on the WWW
• control remote processes
• pack series of pictures in a movie file on demand to visualize something that changes in time

Rasip robot - go there

Some WWW sites featuring live adult content introduced one-way video communication between a user and content provider by using provider's custom software. The user observes the video material, communicates by typing messages, and is charged by minute.