The US Patent office granted Apple a patent for a pressure-sensitive device housing. What that means is new input methods that can make use of pressure on various parts of a device rather than being limited to capacitive touch, keys or mouse movements and clicks.
According to the patent, this makes it possible for users to input commands when factors such as sweat or wet hands make it difficult for the touch screen to work. I’ve seen that first-hand. When I try to use my iPad in the kitchen, then wash my hands to use the iPad, it’s sometimes difficult if my hands aren’t completely dry. It makes the touch controls behave a bit erratically.
This could allow for persons to use pressure to activate things rather than relying solely on touch.