alt Hacker NewsThis reminds me that in the USSR they had typewriters that added an identifier somehow that could be traced back to that particular typewriter (and who it was sold to)
Replies
srean • today at 5:21 PM
Not only USSR.
I wonder whether Arthur Conan Doyle had the idea before the police started using typewriter typeface wear and tear for forensics.
testing22321 • today at 6:47 PM
Sure, try to scan, photocopy, edit in photoshop or print US money today.
You have no idea how deep this rabbit hole goes. Search for EFF printers secret tracking.
Virtually all commercial printers embed an invisible identifier on every page printed.