Nokia has revealed a new mobile phone concept called GEM that has an entirely touch-sensitive body rather than just a front-facing touchscreen. The GEM concept phone aims to revolutionize mobile design by allowing the entire handset surface to change appearance based on the application in use. For example, when using the camera app, the entire phone would transform its look and interface to resemble an actual camera. The GEM phone's touch-sensitive sides could also allow for features like dual zoom views of maps or carrying advertisements on the back for bill discounts.