Air molecules are spaced differently and exert different levels of pressure depending on how hot or cold they are. (scientificamerican.com)
3D Touch is an expanded multi-touch feature that allows the iPhone to measure different levels of pressure in addition to taps, swipes, and pinches. (macrumors.com)
Built into the display of the iPhone 6s and 6s Plus is an expanded multi-touch feature called 3D Touch, which allows the iPhone to measure different levels of pressure in addition to taps, swipes, and pinches. (macrumors.com)