1. A contact evaluation system comprising: a. a contact identification unit that examines contacts with respect to sensor surface and produces first indications regarding the nature and position of sensed contacts; b. a contact synchronization unit that receives and evaluates the first indications to determine if two or more contacts are activated substantially simultaneously and produces second indications identifying qualifying contacts; c. a motion extraction unit that receives and evaluates the first indications produces third indications regarding motion of sensed contacts over time; and d. an event generator that receives and evaluates second indications and third indications, and produces an event signal based thereon.