Digital Pen A digital pen is an input device which captures the handwriting or brush strokes of a user, converts handwritten analog information created using "pen and paper" into digital data, enabling the data to be utilized in various applications. For example, the writing data can be digitized and uploaded to a computer and displayed on its monitor . The data can then be interpreted by handwriting software ( OCR ) to allow the digital pen to act as a text entry interface and be used in different applications or just as graphics. Technology Groups: Accelerometer Accelerometer-based digital pens contain components that detect movement of the pen and contact with the writing surface. Active Active pens, such as N-trig's DuoSense Pen™, include electronic components whose signals are picked up a mobile device's built-in digitizer and transmitted to its controller, providing data on pen location, pressure, button presses and other functionality.