On Mon, 16 Aug 1999, John Foust wrote:
Somebody once
claimed on Usenet (alt.folklore.computers IIRC) that Woz
had used his monitor as a scanner.
There were "scanners" from the Apple era that used the precise
motion of a dot-matrix printer's head to position a photodetector...
A-la ThunderScan...a buddy of mine had one on his 1st-generation Mac many,
many years ago. It was neat...and quite effective!
-Dave McGuire