
As technological advancements are taking place, there is a visible increase in the demand for different digital writing instruments. People are using digital writing instruments to operate several gadgets, be it PC, laptop, or smartphones. There are mainly two types of instruments available to people, namely, digital pens and digital stylus. A digital pen is barely bigger than a stylus, supplies extra performance and features than the latter, and includes a digital eraser, digital camera, internal memory, and programmable buttons. Most digital pens, often simply called pens, are pressure-sensitive. A digital pen can be integrated with a smart writing system to recognize individual pages, different paper tablets, and specific times and dates. In some cases, a digital pen can also be used as a multifunctional scanning pen by text readers.