to...@tuxteam.de (2019-01-02): > Some scanners mail things around, these days. I don't want to even think > about how many security holes lurk in there. > > There's no limit to the amount of stupid^H^H^H^H^H^Hnonsense vendors are > capable of when enough computing power is put in their hands.
Some scanners/copiers use a lossy compression algorithm based on small repeated 2D patterns that can lead to substituting a digit for another. http://www.dkriesel.com/en/blog/2013/0802_xerox-workcentres_are_switching_written_numbers_when_scanning? Regards, -- Nicolas George