Ask HN: Is there a shorthand equivalent for taking notes digitally?

I have briefly studied Pitman Shorthand (https://en.wikipedia.org/wiki/Pitman_shorthand) in the past and I've wondered how easy it is to concisely represent a lot of information in a few pencil strokes.

For those of you who take notes regularly - short of improving typing speed, is there a shorthand-like alternative to taking notes or encoding information digitally? Are there any efforts that have been made in this regard?