Apples launching of amazing 3D touch is considered as an amazing technology of facilitating recognition of 3 kinds of touch by a touch screen. Tap, touch and re-touch, the smart screen can recognize the kind of touch as inputs to implement different kinds of functions. Even if it was well known that Apple is going to launch smartphones with force touch technology, now only we got the details as it is based on 3D touch.
The introduction of deep touch to the well known tap and touch makes this technique as 3D touch. this is considered as the first time 3D touch has been ever introduced.