Wonder if our wide format printers are doing this too

[victor bogdanov]

https://en.m.wikipedia.org/wiki/Printer_tracking_dots

I know my canon colorado and epson printers send job data to the manufacturers, wouldn't be surprised if they're also putting secret identification info on the prints.

Interesting article

 

[Johnny Best]

In Idia they put a dot on the woman’s forehead, must be for identification?

 

[Smoke_Jaguar]

As far as I know, the project was long since abandoned since it was made public. Not seen it on printers since around 2006, but I have by no means done definitive testing.