When Microsoft revealed the Surface Pro 3 in 2014, it stressed that the integrated digitizer was "not a stylus," but rather a digital interpretation of an ink-based pen. In our review, we noted that compared with Wacom's digitizer technology, N-trig's pen was "more natural to hold" and felt "more like dragging a pen across a pad of paper." Many Engadget readers shared the sentiment, though some felt that the screen's pressure sensitivity ruined any attempt at a truly pen-like experience. Maybe that's something N-trig can work on at Microsoft.
N-trig also makes pressure-sensitive pens for companies besides Microsoft, and the report doesn't address whether this part of its business will continue. When we reached out, Microsoft offered no comment on the report (even though we'd accept a hand-written digital letter as a response).