This invention relates to an optical imaging device that includes an elongate housing. An infrared sensor arrangement is arranged in the housing and is configured to sense information printed on a page with infrared ink. The device also includes a radio frequency transceiver arranged in the housing and operatively connected to the sensor arrangement for communicating said information wirelessly. A pair of orthogonal accelerometers mounted in the housing in a plane normal to an elongate axis of the housing. The accelerometers enable the device to sense direction and speed of motion without reference to a location on the page. Also included is a controller circuit for controlling operation of the sensor arrangement, the transceiver, and the accelerometers.