【Abstract】In a college classroom in the Indian city of Bangalore last August, Moiz Ahmed held up a volleyball-size chrome globe with a glass-covered opening at its center. Ahmed explained to the students that if they had their irises scanned with the device, known as the Orb, they would be rewarded with 25 Worldcoins, a soon-to-be released cryptocurrency. The scan, he said, was to make sure they hadn't signed up before. That's because Worldcoin, the company behind the project, wants to create the most widely and evenly distributed cryptocurrency ever by giving every person on the planet the same small allocation of coins.
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