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[–] 5541783? 0 points 2 points (+2|-0) ago 

I think it only applies to inkjet printers (the watermarks are printed using yellow ink on white paper). But don't take that to the bank.

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[–] 5542110? [S] 0 points 1 point (+1|-0) ago 

Does inkjet = color and laser = black & white?

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[–] 5542326? 0 points 2 points (+2|-0) ago 

No. We have color laser printers at work.

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[–] 6304284? ago 

There are also black and white inkjet printers.

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[–] 5541700? 0 points 2 points (+2|-0) ago 

And all printers have memory, Watch what you print.

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[–] 5541500? 0 points 2 points (+2|-0) ago 

With my exceptionally bad luck with printers not working properly, I can't help but feel the secret i.d. number is flawed.

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[–] 5541475? 0 points 2 points (+2|-0) ago  (edited ago)

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[–] 5541083? [S] 0 points 2 points (+2|-0) ago 

Does this system have some sort of name, perhaps? So I can google doogle it?

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[–] 5541131? 0 points 5 points (+5|-0) ago 

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[–] 5541156? 0 points 3 points (+3|-0) ago 

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[–] 5541121? 0 points 1 point (+1|-0) ago 

Microprinting. And to my knowlege, yes all modern printers do this.

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[–] 5544662? ago 

Seems like ink printers are safe? Or did I miss something?

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[–] 5548714? [S] ago 

It seems like many color printers are unsafe but black & white printers are safe, judging from all the links people shared.