One place I worked for used to print a newsletter and they had big Xerox Fiery blah blah blah printers that they leased. One lady wanted to have a picture of money in the newsletter, so she went to the big scanner and tried to scan it.
Interestingly, the scan merely had a big black rectangle where the note was. The scanner refused to scan it because it detected it was currency. She tried a few more times. Later on the Xerox technician said "Yeah, don't do that. You do it enough times and the unit will send an alert out that eventually gets passed to the FBI. You'll have big black SUVs in y…