[HN Gopher] List of Printers Which Do or Do Not Display Tracking...
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       List of Printers Which Do or Do Not Display Tracking Dots
        
       Author : anonu
       Score  : 34 points
       Date   : 2021-06-24 20:33 UTC (2 hours ago)
        
 (HTM) web link (www.eff.org)
 (TXT) w3m dump (www.eff.org)
        
       | floxy wrote:
       | Anyone know the status of steganographic tracking / watermarking
       | for scanners? Like when you scan to PDF. There might be something
       | plain-text/easy that ends up in the PDF file to identify the
       | make/model/serial number of the scanner that might be
       | straightforward to strip. But are there more subtle yellow-dot
       | like things that might be harder to strip?
        
       | rendx wrote:
       | Does not look very useful, unfortunately:
       | 
       | "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.
       | 
       | This list is no longer being updated."
       | 
       | I wonder if it would be possible to reverse engineer the
       | firmware, and remove the dot printing, similar to camera hacks
       | that remove feature restrictions.
        
       | oxfeed65261 wrote:
       | > "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."
       | 
       | So the title is misleading; this list indicates whether dots have
       | been observed, not whether they are present.
        
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       (page generated 2021-06-24 23:01 UTC)