1. A method comprising the steps of: a. examining a human hand with respect to sensor surface and periodically producing first indications regarding the nature and position of sensed contacts, the contacts comprising identified portions of the hand; b. evaluating a first set of the first indications to determine if the character of sensed contacts is consistent with a hand gripping a writing implement for writing on the sensor surface; c. evaluating a second set of the first indications to determine if the character of sensed contacts is consistent with a hand gripping a writing implement for writing on the sensor surface; d. if the character of both the first set and the second set are both consistent with gripping a writing implement, producing second indications regarding the perceived motion of the perceived writing implement.