Imaginary Phone!

The idea its certanly strange but interesting. three german students at the Hasso-Plattner Institute invented a technology that allows users to  use their palm like a touch screen while inputs are transferred to the phone(IPhone) over Wi-Fi.
To make calls it would still needing the device but with the "imaginary" version it would be possible to access to the apps and reject a call.

Amazingly the entire process does not require any visual or physical feedback, only depending on your muscle memory(because you should remember the possition of the buttons) and your personal ability to operate the phone blindly, since it got a ingenious camera tracking technology powered by a wearable depth that they developed.

With this technology they are trying to complete the use of remote controls and telephones, allowing to use them even when you dont know where they are.