Patent ID: 8922499

Claim:
A method of selecting input of a computer system including a touch sensing surface, the method comprising: tracking one or more contacts on or near the surface to obtain touch information of the contacts; determining a number of the one or more contacts; determining whether the one or more contacts are in motion; determining whether the one or more contacts are at a rolling stop; and selecting an input based on the number of contacts, whether the contacts are in motion, and whether the contacts are at a rolling stop; wherein determining whether the one or more contacts are at a rolling stop further comprises: determining a first average speed of the one or more contacts motion over a first period of time; determining a second average speed of the one or more contacts motion over a second period of time, the second period of time shorter than the first period of time; and comparing the first average speed and the second average speed to determine whether the one or more contacts are decelerating.