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Games

Phoronix Confirms GNU/Linux Steam and Source Engine Clients 324

nukem996 writes "After initially reporting in 2010 that Valve was working on a native GNU/Linux client, one has finally been confirmed. Michael Larabel recently visited Valve's Bellvue, WA based office and has been able to see it himself. Included in the article are screenshots of the client running and speculation of a release." Valve has yet to officially comment, but you'd hope they wouldn't invite someone up to their offices and send them home to spew lies.
Security

Next-Generation CAPTCHA Exploits the Semantic Gap 327

captcha_fun writes "Researchers at Penn State have developed a patent-pending image-based CAPTCHA technology for next-generation computer authentication. A user is asked to pass two tests: (1) click the geometric center of an image within a composite image, and (2) annotate an image using a word selected from a list. These images shown to the users have fake colors, textures, and edges, based on a sequence of randomly-generated parameters. Computer vision and recognition algorithms, such as alipr, rely on original colors, textures, and shapes in order to interpret the semantic content of an image. Because of the endowed power of imagination, even without the correct color, texture, and shape information, humans can still pass the tests with ease. Until computers can 'imagine' what is missing from an image, robotic programs will be unable to pass these tests. The system is called IMAGINATION and you can try it out." This sounds promising given how broken current CAPTCHA technology is.

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