The pencil and paper are fine, but may not follow me around wherever I play. The idea of embedded notes is that;
a) not only are they part of your "locker" (interesting idea), only the notes about a particular course/hole/play line are presented when you are back at that same place. Things like, recorded wind speed, elevation, club I chose last time, how well I hit it (meter zero crossing), what strength I used, how far it went, etc. These could all be electronically attached to my ID only and available at a simple click of the mouse.
b) you could have an option to share notes with 'friends' (though goes against the golfing rule of giving advice to fellow players).
c) could offer 10 last plays or unlimited number of recorded entries
There are eleven ways from Sunday I can think f how this could work. If I were a software programmer, I'd write the code.
Maybe there are others who have ideas like this?