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I suspect this is why when you buy a printer at Fry's, you are asked your name and phone number. That potentially matches you to the watermark even when you pay
by genwin 12y ago
I suspect this is why when you buy a printer at Fry's, you are asked your name and phone number. That potentially matches you to the watermark even when you pay cash.
- BrandonMarc 12y agoIt sounds like the watermark includes encoded info about the network, IP addresses, what have you. From one of Schneier's commenters, black-and-white printers have their own method, involving tiny imperfections in certain letters. It reminds me of how Blizzard encoded info in World of Warcraft screenshots (user, ip, campaign, timestamp, realm, what have you). Scary stuff. Makes you want to not take it seriously, almost as a mental defense mechanism.
- DanBC 12y agoSo I need to use anti-TEMPEST style techniques for my printer fonts now? http://www.cl.cam.ac.uk/~mgk25/emsec/softtempest-faq.html http://www.cl.cam.ac.uk/~mgk25/emsec/softtempest-faq.html