Smartphone screens seem to be getting better and better all the time. Not necessarily in things like touch sensitivity or touch technology in general, but screens come in true HD and in a variety of sizes. Disney decided that they were going be the ones to take the next step in actual touch technology.
Disney Research has developed a screen that can recognise multiple users. Not in the classic sense of taking turns, either. Two people can touch the display at the same time and the screen can tell who is who. This is an amazing advancement in technology and could be the next big thing in touch screens.
According to Disney, it works by measuring the impedance of a person to various frequencies of AC electricity. To put it much more simply, it measures how your body reacts to AC electricity. Once the measurements are done, it is saved into your profile. You can have a potentially unlimited number of users using stylus pens.
The way the technology is right now, it already has a bunch of potential uses. True multiplayer gaming on things like tablets would be possible. Really, any interactive function that can be done by multiple people could be used. In the image at the above, Disney demonstrates a multi-user paint application. The application also works with an ipad stylus.