Windows Ink represents a set of pen-driven experiences that help you set your written ideas in motion. Windows Ink – Advancing the Pen-and-Ink Ideal
The advent of Windows Ink opens avenues to more recognizant or authentication-friendly signature files, as well as the tactile ability to more immediately control written compositions in a dynamic way. It puts a digital pen in your hand and allows you the most hands-on interactive ability to write messages, memos, and documents in your own handwriting and send or store them electronically.
Windows Ink is an exciting new program in the same family as Web Notes and Microsoft Edge, available through the Windows 10 Anniversary Update.