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Printers and microdots
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wtg
Has Achieved Nirvana
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posted
I had no idea.

quote:
Why Printers Add Secret Tracking Dots

They’re almost invisible but contain a hidden code – and their presence on a leaked document has sparked speculation about their usefulness to FBI investigators.


https://getpocket.com/explore/...source=pocket-newtab


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When the world wearies and society ceases to satisfy, there is always the garden - Minnie Aumônier

 
Posts: 38235 | Location: Somewhere in the middle | Registered: 19 January 2010Reply With QuoteReport This Post
Axtremus
Minor Deity
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This thing is real!

After reading up on this "microdot" stuff, I ordered a couple of blue LED light bulbs online. I received the bulbs today and tried it on a page of color printer printout, and I see these microdots.

I also looked at a page of black-and-white only printout, and there is no "microdot" that is visible to my naked eye.


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www.PianoRecital.org -- my piano recordings -- China Tune album

 
Posts: 12733 | Registered: 01 December 2006Reply With QuoteReport This Post
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