Printers are the text book examples of why device manufacturing shouldn't be left to big companies. You have tracking dots, spyware infestation, subscription for ink/toners, reporting of the cartridge as empty when you still have much left in it, refusal to print when unused color cartridges are empty, intentional bricking if 3rd party cartridges or ink is used, and utterly crappy firmware in general.
Inkjets require precision manufacturing. But assembling it or other types from components should be possible - like how desktops, mechanical keyboards, etc can be. We really need to ditch filthy mass market printers because DIY printers will be much better than anything they offer.
It's how Reality Winner got real fucked.
via Wikiedpia:
Both journalists and security experts have suggested that The Intercept's handling of the reporting, which included publishing the documents unredacted and including the printer tracking dots, was used to identify Winner as the leaker. In October 2020, The Intercept's co-founding editor Glenn Greenwald wrote that Winner had sent her documents to The Intercept's New York newsroom with no request that any specific journalist work on them. He called her exposure a "deeply embarrassing newsroom failure" resulting from "speed and recklessness" for which he was publicly blamed "despite having no role in it." He said editor-in-chief Betsy Reed "oversaw, edited and controlled that story." An internal review conducted by The Intercept into its handling of the document provided by Winner found that its "practices fell short of the standards to which we hold ourselves".
Wikipedia has a good article on it, including photos of what the marks look like. They're practically invisible to the naked eye, getting them to show up usually requires additional steps like taking high quality scans and running them through some color filters, or using a UV light.
From the EFF coverage of it, it sounds like every laser printer probably prints these marks now. I'm not sure if inkjets or other printer types do or not.
The EFF has some info about the practice - https://www.eff.org/pages/list-printers-which-do-or-do-not-display-tracking-dots.
I imagine there are ways and means of obfuscating / anonymizing the dots such as blocking the printer from emitting them (e.g. an empty yellow cartridge that the printer perceives as full), modifying the firmware, using a burner printer, or using a mono laser jet.
As a side issue, most modern bank notes have a bunch of yellow circles integrated into the design on each side. They look random but they're in a recognisable pattern called a constellation that enables devices like copiers / scanners to recognize when people are trying to copy money or other financial instruments like checks.
All of this just makes me want an open source printer. Anyone know of a color laser printer which uses open source firmware?
This is part of the reason I still have an HP 4050DTN and an HP 5000DTN. Plain B&W, but absolutely bulletproof and lacking all tracking, subscription, or DRM bullshit.
Hell, I can still get overstuffed cartridges that can do 20,000 prints at 5% coverage. I’m on my third one in two decades and two degrees with my 4050.
It's weird that when it comes to security companies are like "we got too many important things to be doing, like adding this quarters new shiny feature, we don't have time to encrypt user data".
You would think that when it comes to adding obscure tracking codes companies would be like "we don't care what people print, it's not our problem, we aren't going to bother with tracking watermarks". But, no, every company has tracking watermarks while cutting every other corner possible.
I mean, half the companies out there are barely able to get their software to work, meanwhile printer companies have this robust watermark system that never fails. I don't understand these priorities.
Where's my tinfoil hat?
The K in CMYK is grey, not black. The other ink tones are added to make it appear black.
Edit: It seems people don't want to hear that. But sorry, that's how CMYK works. Black is roughly C=75 M=68 Y=67 K=89 in most major colour profiles used for printing. When you tell your printer to print something black, it won't use just Key (around 85-90% grey), and will apply normal CMYK blacks which use value from all 4 inks.
It's been like this for 120 years and is not a "big printer" conspiracy. If you don't like this, don't use a CMYK printer. It's just going to print CMYK values with CMYK inks like you told it to and none of those inks is black.
