I remember the Back to the Future 2 novelization had a small exchange between Marty and the server at Cafe 80s about why he wants to use physical money, instead of just swiping his thumb.
I don't know if that was from a deleted scene from the movie, but I felt it added some more setup to the part where Doc tries to save Jennifer and tells her to hold her thumb to the pad by the door.
I remember the Back to the Future 2 novelization had a small exchange between Marty and the server at Cafe 80s about why he wants to use physical money, instead of just swiping his thumb.
I don't know if that was from a deleted scene from the movie, but I felt it added some more setup to the part where Doc tries to save Jennifer and tells her to hold her thumb to the pad by the door.