Dot matrix pen is a new type of writing synchronization tool for paper and digital media. The high-speed camera at the front end of the dot matrix pen captures the movement trajectory of the pen tip at any time, identifying the dot matrix pattern printed on the paper, and the pressure sensor transmits the pressure data back to the data processor. Finally, the information is transmitted to the screen device through Bluetooth, collecting the real-time writing trajectory, pen tip, and dynamic process of the user.