This will not affect you directly. This is implemented via Google Play Services, any phone not running that will not verify signatures.

My modern LCD takes eons longer to turn on than any of the CRTs I’ve used.

https://www.eff.org/pages/list-printers-which-do-or-do-not-display-tracking-dots

Specifically note the updates

(Added 2015) Some of the documents that we previously received through FOIA suggested that all major manufacturers of color laser printers entered a secret agreement with governments to ensure that the output of those printers is forensically traceable. Although we still don’t know if this is correct, or how subsequent generations of forensic tracking technologies might work, it is probably safest to assume that all modern color laser printers do include some form of tracking information that associates documents with the printer’s serial number. (If any manufacturer wishes to go on record with a statement to the contrary, we’ll be happy to publish that here.)

(Added 2017) REMINDER: IT APPEARS LIKELY THAT ALL RECENT COMMERCIAL COLOR LASER PRINTERS PRINT SOME KIND OF FORENSIC TRACKING CODES, NOT NECESSARILY USING YELLOW DOTS. THIS IS TRUE WHETHER OR NOT THOSE CODES ARE VISIBLE TO THE EYE AND WHETHER OR NOT THE PRINTER MODELS ARE LISTED HERE. THIS ALSO INCLUDES THE PRINTERS THAT ARE LISTED HERE AS NOT PRODUCING YELLOW DOTS.

+9 appears to be currently shivving +10, so my money is with them

I may have misunderstood the assignment

This is not open source software, it’s licenced under the Anti Capitalist Software Licence.

I still appreciate it in this list, but the caveat is important

Uno changes the rules every few years so that people have different ideas of which “house rules” are canon. Being “the game that people argue over” keeps it in the public consciousness much better than “that game that’s kind of fun to play two rounds of occasionally”