Apple has patented the ability for a touchscreen to have multiple points of interactions, making the way for some very interesting ideas for computing. Touchscreens in the past have only really been for simple applications such as media kiosks, presentations, and almost elementary tasks and the like. Now with this new technology, the possibilities are almost endless. Keyboard and mouse have been the mainstay of manipulation on computers but if multi-touch were to be on an affordable scale they could take a back seat. No longer would be using keybinds associated with buttons and tasks, you would be actually touching those buttons and performing those tasks.
A video demonstration can be found
here