Anything you can capture from other people helps.
“It’s interesting to think of what the future might bring in information-capture technology for user research. In my dreams, an ideal tool would be on a tablet, reducing the massive amount of paper that I currently waste when capturing handwritten notes. It would allow me to view a discussion guide and add handwritten notes using a stylus. My notes would be synced with either an audio recording or a wireless video recording, which would make it easy to jump to any point in a recording that corresponds to particular notes. The application would then take my handwritten notes and automatically convert them to text that I could manipulate in a word processor. Do you know of any tools that would let me achieve this? If not, I can dream. In the meantime, I’ll be taking plenty of handwritten notes on paper and backing them up with audio or video recordings.”
(Jim Ross a.k.a. @anotheruxguy ~ UXmatters)