I've always been intrigued by "digital ink" or the process of digitizing what I've written. I was a proud owner of an Apple Newton, and since then an original Windows Tablet PC where I would use OneNote to take notes with a pen. Today there are many devices that allow you to do this. I have a Microsoft Surface Pro 4 with its excellent Pen, as well as an iPad Pro 9.7 with the Apple Pencil. None of them really come close to that feeling of writing on real paper, with a real pen.