Write it Down
robertgreiner.com
robertgreiner.com
In my personal experience this (hard to keep) habit really makes a difference. Every time I'd sent my notes and comments to other people to whom I met with, their answer was super positive, and in most cases they would complement with further details that were more than welcome to my work (project management).
If you're going to share, you may want to type up the content as opposed to sharing the picture(s), depending on context. Nonetheless, you immediately have the notes on your device as opposed to pieces of paper to keep track of or a board possibly at the mercy of other conference room users.
P.S. I'll add that I do find it useful to flesh out e.g. meeting notes after the meeting. There will be things I didn't write down, and thoughts that germinate afterward.
For paper notes, I'll often use a different pen color, so that I know what was written in which context. Even with on-screen notes, I'll use a different text color to identify this difference. The distinction helps when referring back to the notes.