Accenture and Microsoft have developed a digital identity prototype using blockchain technology as part of a humanitarian project to provide legal ID to more than 1.1 billion people around the world, including 7 million refugees, by 2020. The prototype — revealed this week at the second summit of ID2020, a public-private consortium promoting the United Nations 2030 Sustainable Development Goal of providing legal ID for everyone — combines a person’s biometric information such as their fingerprint or retina scan with blockchain, the record-keeping technology that underpins cryptocurrencies, to create a legal identity.

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