Apple

How Laptops Create Localized Vibrations on Their Surfaces

Apple's patent describes a laptop design that delivers tiny, distinct vibrations to specific parts of its surface, like a trackpad or palm rest, without those vibrations being felt in the areas right next to them.

How Devices Detect Touch Using Heat Signatures

This patent describes a system that uses a thermal camera to detect when two objects, like a finger and a screen, touch by looking for a specific temperature change at their contact point.