A digital pen is an input device which captures the handwriting or brush strokes of a user, and digitizes them so that they may be downloaded to a computer and displayed on its monitor. The data can then be interpreted by handwriting software and used in different applications or just as graphics.
A digital pen is generally larger and has more features than a stylus. Digital pens typically contain internal electronics, and have features such as touch sensitivity, input buttons, memory, Bluetooth transmission capabilities, and electronic erasers. Some models can be found on graphics tablets made by manufacturers such as Wacom, while other models are tablet-less, such as those using Anoto technology, which works on paper or other surfaces such as whiteboards. Polyvision sells a product called eno which uses the Anoto dot pattern and digital pen technology.