Pen and Paper
Pen has been used as a tool for taking notes for ages. It has also been the fundamental interface for learning. Lately, we have shifted away from using pens towards writing with keyboards.
We find this trend a bit lazy because it has been studied
( https://tinyurl.com/y6syxr47 ) that taking notes by writing with a pen activates your brains differently.
That’s why we are creating PURO to use stylus pens as an input device. The modern OCR (Optical Character Recognition) technology allows us to use styluses for every day writing.