Your printer may be ratting on you (6)

1 Name: Sling!XD/uSlingU 2005-10-20 13:35 ID:ewhZiZmE
"The Electronic Frontier Foundation [] has analyzed codes embedded in printouts in color laser printers. The code cracked by the EFF was an invisible bar code that contained the serial number of the printer for tracking users as well as the date and time a page was printed.

In Xerox printers the code appears in a pattern of yellow dots visible only with a magnifying glass and a blue light. The codes are supposed to be for government agencies looking out for counterfeit currency printers.

The EFF said it has identified similar coding on pages printed from virtually every major printer manufacturer"

List of Printers Which Do or Don't Print Tracking Dots:

2 Name: Unverified Source 2005-10-20 16:02 ID:U1ojhtIH

So do photocopier's "carry on" the dots?

3 Name: Sling!XD/uSlingU 2005-10-20 22:22 ID:ewhZiZmE

My guess is "yes"... assuming the scanner can see them.

Now, what about a completely yellow page? :)

4 Name: !WAHa.06x36 2005-10-21 12:28 ID:pLYhLL5R

This is vaguely related, and is also a fun game to play with any bills you can get your hands on:

5 Name: Sling!XD/uSlingU 2005-10-21 15:36 ID:ewhZiZmE

Picture of the laser dots here:

6 Name: KJI!XDpPLAUYlQ 2005-10-21 20:38 ID:4R3HFP4L

Heh, both of mine are under "yes."

...Not like I print anything besides homework, anyway.

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