In a paper, published online last week but not yet peer-reviewed, a group of 32 researchers from OpenAI, Microsoft, Harvard and other institutions call on technologists and policymakers to develop new ways to verify humans without sacrificing people’s privacy or anonymity. They propose a system of “personhood credentials” by which people prove offline that they physically exist as humans. Source: Analysis | AI researchers call for ‘personhood credentials’ as bots get smarter