The filed patent says:
The haptic feedback from the piezeoelectric actuators may allow for enhanced navigation of the content displayed on a display coupled to the touch-based user interface. In one embodiment, the piezoelectric actuators may replace the mechanical “click” of a mouse, trackpad, or other user interface of an electronic device. For example, the touch-based user interface may confirm a “click” by supplying a voltage to the piezoelectric actuators so that the user feels a vibration or other motion. In one embodiment, the electronic device may interpret a tapping motion on the surface of the touch-based user interface as corresponding to a click command. In contrast, when the user glides a finger or other object along the surface of the touch-based user interface, the piezoelectric actuators may remain unactuated. Accordingly, a user may be able to ascertain whether the electronic device has interpreted an input gesture as a click or a scroll.
Senseg’s technology, in contrast, uses an electric field rather than actuators to provide haptic feedback.
This is by no means a decisive blow against hopes that Senseg’s technology will be used in new Apple devices. Apple has been in the haptics game for some time now, filing a patent for a “multi-haptic” system in 2010, as well as a tactile feedback system for a tablet filed in 2009.