lee1 writes "New Scientist reports on an 'interactive computer display that keeps track of multiple users by differentiating between their touch'. The system consists of a touch-sensitive screen that can be operated by several users simultaneously. When a user touches the screen an electrical signal is sent through their body and picked up by a receiver located in their chair, telling a computer precisely where the screen was touched and by whom. Applications could include system access control, safer vehicle controls, and smarter videogames. The bottom line, in the words of one of the inventors: 'If the controls know who is operating them, they can behave appropriately.' The movie even has funkier than average background music."