Disclosed is a “keyboard overlay” that sits on top of a touch-sensitive display screen of a computing device. After aligning the overlay on the display screen, the user types on the overlay. When the user presses a key on the overlay, the pressure is transmitted to the display screen below. That...http://www.google.de/patents/US7659885?utm_source=gb-gplus-sharePatent US7659885 - Method and system for using a keyboard overlay with a touch-sensitive display screen
