An anonymous reader writes "Slate argues that we're going about verifying humans on the Web all wrong: 'As Alan Turing laid out in the 1950 paper that postulated his test, the goal is to determine whether a computer can behave like a human, not perform tasks that a human can. The reason CAPTCHAs have a term limit is that they measure ability, not behavior. ... the random, circuitous way that people interact with Web pages — the scrolling and highlighting and typing and retyping — would be very difficult for a bot to mimic. A system that could capture the way humans interact with forms algorithmically could eventually relieve humans of the need to prove anything altogether.' Seems smart, if an algorithm could actually do that."
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