Method and system for using a keyboard overlay with a touch-sensitive display screen

A computing system adapted for use with a plurality of different keyboard overlays, the computing system comprising:

• a touch-sensitive display screen responsive to contact by a display actuator on a key bottom surface of said plurality of different keyboard overlays, the plurality of different keyboard overlays comprising removable keyboard overlays;
• a connection mechanism for removably connecting a keyboard overlay to the touch-sensitive display;
• an alignment mechanism for aligning the keyboard overlay with the touch-sensitive display screen;
• a sensor for:
• detecting a presence of a removable keyboard overlay aligned with a touch-sensitive display screen of a computing system, wherein the removable keyboard overlay is aligned when a rigid frame surrounding the periphery of the removable keyboard overlay slides fully into a slot on the computing system detecting a type of the removable keyboard overlay based at least in part on information relating to the removable keyboard overlay, the information comprising:
• size of the removable keyboard overlay;
• transparency of the removable keyboard overlay;
• and
• the arrangement of the keys on the removable keyboard overlay;
• and
• a utility program executable from a computer storage media for communicating with the sensor and for alerting applications to the presence of the keyboard overlay, wherein the utility program is configured to:
• communicate according to the type of the keyboard overlay detected;
• rearrange information displayed on the touch-sensitive screen in response to the detected type of the removable keyboard overlay;
• run a specific application on the computing system appropriate to the detected type of the removable keyboard overlay;
• tell the application about the presence and detected type of the removable keyboard overlay;
• detect a touch on the touch-sensitive display screen in an area covered by the removable keyboard overlay;
• and
• inform the application of the position of the detected touch.