Especial sensor installed in the phone instead of the keypad block. That sensor consist of Pyramid Keyboard and Feelers ear piece. The Pyramid Keyboard allows you better to enter text. At twelve pyramids, I quietly placed the entire alphabet. Need only slight inclination of the tip of each pyramids in the correct letters. The Feelers ear piece with accelerometer defines touch, micro gestures and natural mimic - nodding the head (yes,no, maybe).
Natural interface is based on a natural reaction to the system asked questions. This reaction in the gestures of the head is read as Yes, No or Maybe. At the same time the questions themselves are initiated by user gestures. That is a small hand movements the user to keep the phone near the ear is similar to the mouse. This interface is certainly not suitable for large texts in contrast to the GUI, but it is possible to organize a completely different service. You can, for example, an auction at the supermarket, where the price flexibly adjusted depending on the reaction of the buyer. Supermarkets are also to be profitable as a live auction allows the flexibility to reduce costs.