Writing instrument with multiple sensors for biometric verification

Claim 1

Verification apparatus comprising a writing instrument having in combination: (i) a body; (ii) grip sensing and recording means which during a period of an intended movement with the writing instrument by a person senses all points of contact with the writing instrument by the person holding it by a sensitive sleeve that identifies the points of contact by reference to a grid on the sleeve and measures pressure of the contact and variations of the contact and pressure, captures measured data, and compares the captured data with previously recorded data; (iii) writing pressure sensing and recording means which during the period of the intended movement senses contact between the writing instrument and a writing surface and measures pressure of the contact, captures measured data, and compares the captured data with previously recorded data; and (iv) gyroscope position sensing and recording means which during the period of the intended movement senses movement of the writing instrument relative to a writing tip of the writing instrument and variations thereof, correlates a pattern of the movement and the variations thereof with positional coordinates by reference to a semisphere projected over a base circle, the centre of which is a first point of contact of the writing instrument with the writing surface, captures data recording the pattern of the movement and the variations thereof, and compares the captured data with previously recorded data.