Remember the Brady Bunch
episode where the family traces a letter from Jan's "secret admirer" to Alice's typewriter? Of course you remember it. Now, researchers at Purdue University have developed a similar technique for laser printers. Law enforcement would use the approach to bust counterfeiters and forgers.
The technique uses specialized software to detect slight variations, or "intrinsic signatures," of printed characters, revealing subtle differences from one printer to another. Even printers that are the same model have slight flaws and variations in their mechanical systems. These variations result in subtly different characters.
Link (via Slashdot)
"We have observed variability from printer to printer within a single model, " (researcher Jan) Allebach said. "That’s because for a company to make printers all behave exactly the same way would require tightening the manufacturing tolerances to the point where each printer would be too expensive for consumers.
You’d be forgiven for thinking the videocassette format long-dead, but it turns out that Betamax is still around. Sony is finally going to withdraw tapes from sale, bringing a 40-year story to an end. The last recorders were sold in 2002. ベータビデオカセットおよびマイクロMVカセットテープ出荷終了のお知らせ [Sony; via The Verge]
A leaked Comcast memo discloses that the company’s consumer data caps have nothing to do with network congestion, contrary to its public claims. The internet service provider has often complained (such as when lobbying against net neutrality) that it must impose limits on service to prevent network congestion. The argument suggests that these measures are […]
LA Makerspace co-founder Tara Tiger Brown shares a project that her kid-friendly maker workshop is trying to make a reality.
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