I overheard our copier guy at work today saying that the copies we make have small bits of yellow ink too small to be seen normally, that idenify the copier that made it.
I find this hard to believe but I can see how it would be possible.
I was just wondering what other things you’ve heard about that are “so called secrets” like the above, but everyone knows about.
Whether or not they are true I guess is a different thread, but I just kind of wanted to get a list.
Here’s a site that describes it:
http://w2.eff.org/Privacy/printers/docucolor/
Xerox machines capable of reproducing authentic looking currency are designed to to print images that look like money:
http://www.xeroxtechnology.com/acd
They’ve also patented a way to identify copies of regular documents:
http://www.xerox.com/go/xrx/template/inv_rel_newsroom.jsp?app=Newsroom&ed_name=NR_2007May30_XeroxInnovation_FluorescentWriting&format=article&view=newsrelease&Xcntry=USA&Xlang=en_US
But, to answer the OP, you may be surprised they do it for movies, too:
This one’s a little dated, but there was a “not so secret secret” regarding Tonopah, Nevada some years ago. My cousin worked in Tonopah for a while on this “secret” project and couldn’t talk about it, even though everyone pretty much knew that what was being built there was the …
first Stealth aircraft. (Was it the fighter or the bomber? I’m not sure.)
J.
Cockeyed.com offers you proof of this:
http://www.cockeyed.com/citizen/printer_yellow_dots/dots.shtml
Can’t think of anymore of the top of my head, but i just know this’ll be one of those threads where we read it and think “that was a secret? hmmm”