iPhone Force Touch

“We believe that iPhone’s Force Touch sensor doesn’t directly detect the pressure applied by fingers,” Kuo said. “Instead, it monitors the contact area on which the finger touches the screen to decide how big the pressure is.”

Samsung could totally make use this technique to create its Force Touch technology in its Galaxy phones. By calculating the force using the number of pixels that are in touch with the fingers.

For example, for 100 pixels, it is a force level of 1 and for 1000 pixels, it is a force level of 10.