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Prof. Arun Sundararajan on alternatives to captchas for online security

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Excerpt from Marketplace -- "That annoyance is why Ticketmaster says it’s switching to shorter, easier captchas. Instead of text, Ticketmaster customers will have to solve image puzzles. You might be presented with a picture of a car, a flower and a dog and be asked to identify the animal. 'This is something that is reasonably pleasant for the human being to go through but really difficult for computers to do,' says Arun Sundarajan, a professor of digital strategy at NYU’s Stern School of Business."

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