Portable thumb unit
From Futurepedia, the Back to the Future Wiki
Portable thumb units were used in 2015 to collect donations and other funds where a person was unable to access a teller. Terry, representing the Hill Valley Preservation Society came up to Marty McFly asking for a $100 donation to save the Courthouse.
[edit] Appearances
- Back to the Future Part II
- Back to the Future Part II novelization (First identified as Portable Thumb Unit)
