A touchscreen with keys that rise and disappear
http://whatsnext.blogs.cnn.com/2012/06/06/a-touchscreen-with-keys-that-rise-and-disappear/?hpt=hp_bn5
I am almost curious enough to explore the technology behind this. It seems rather amazing that you can have actual buttons at will, but I am aware of several substances that can dramatically change shape and size with electric current. I wonder if it is limited to specific buttons at specific places or if it is possible to make any part of the surface any texture. The latter, I think, would probably be cool enough to get app developers to take on the programming effort and could drive sales, but I doubt the average smart phone user would pay much of a premium for just buttons.
