Especially the ones that don't let you print B&W if you run out of colour ink,
They need the colour ink to print the tracking dots :)
https://en.wikipedia.org/wiki/Machine_Identification_Code
https://www.bbc.com/future/article/20170607-why-printers-add-secret-tracking-dots
With how expensive colour ink is, that's also stupid
Post funny things about programming here! (Or just rant about your favourite programming language.)
They need the colour ink to print the tracking dots :)
https://en.wikipedia.org/wiki/Machine_Identification_Code
https://www.bbc.com/future/article/20170607-why-printers-add-secret-tracking-dots
With how expensive colour ink is, that's also stupid