Touch ID could get significantly more useful in future iOS devices, according to an Apple patent filing revealed this week. The filing, first spotted by Patently Apple, is extremely lengthy (combines several patents) and offers an overview of where Apple thinks fingerprint technology is headed.
One of the more interesting inventions is a portable touch display with integrated fingerprint sensors. So instead of touching the Home button, you could simply touch a designated part of the display to unlock your device or authenticate something. Apple says it could even offer tactile feedback.