this post was submitted on 10 Nov 2025
10 points (91.7% liked)
TeX typesetting
199 readers
1 users here now
A place to share ideas, resources, tips, and hacks for Donald Knuths typesetting software TeX. All variants and formats like OpTeX, LaTeX and ConTeXt are welcome.
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Don't use laser printers for your letter They create a specific traceable pattern on the paper that let's people in the know identify your printer.
I would of course frame some poor sucker by using their color Canon printer. I think all the Canons have the yellow tracker dots.
Otherwise a black Samsung or Oki would perhaps be safest.
BTW, why do you mention laser printers specifically? AFAIK the trackers are generally with yellow pigment, and most laser printers are not color.
is it only yellow dots? I would have guessed that black-and-white printers use single black dots in patterns, which would be invisible for most intents and purposes, too.
It's "to track counterfeiters" supposedly. Only color printers should have tracking dots, but my paranoia doesn't trust that my b/w printer doesn't have tracker dots.