Abstract: A digitized writing apparatus of this invention comprising a portable set of a pen body and a reference medium wherein the pen body and the reference medium each comprising at least a set of pen body position-identifying sensors capable of transmitting and receiving a succession of position-identifying signals between said pen body and reference medium during a writing task. The pen body and the reference medium further comprise at least a set of magnetometer and accelerometer to assist the ultrasonic and infrared systems in identifying the position coordinates, distances, and angles of the pen body in relations to the reference medium. A set of controller and memory units are further introduced to control and coordinate the activation and deactivation of the position-identifying sensors and to record the pen position locations and coordinates during a writing task.