"In any case, EARS are analog"
No. They are not. (Or for some people, they will not be)
Ever thought about a hearing aid? How about a hearing aid that records things? handy huh.
Soonish rather than latish, some guy will implant a hearing aid, with large capacity of storage, either connected, or local, and they will have the ABILITY to record their life in autdi, and polayback whenever they want. Possibly mind controlled.
No Sci-fi, possible today, with current technologies.
If you think beating upa disabled person, in the Mac D's, for wearing what looks like a google glass(hole) apparatus. Wait till hearing aids with recording become popular....
(Woudnt it be AWESOME, if you could re-wind that lecture, or that song, you heard years ago?)