A digital notebook that uses normal pen and paper? (inc.com)
The pen, while specialized, is still a normal pen, and the paper, while different than normal paper, still looks and feels like normal paper. (businessinsider.com)
Livescribe's Smartpen works like a normal pen, including writing words, scribbles, and diagrams, and then syncs everything you write to what is being said aloud, from a teacher or professor for instance. (educationworld.com)