For some time now, a phenomenon has been appearing in squares and public places in Argentina and other Latin American cities: long queues of people waiting to have their irises scanned with a silver-coloured ball on a tripod. This is the Worldcoin project, an initiative by Sam Altman, the owner of OpenAI, the company that developed ChatGPT, which gives out money (cryptocurrencies or dollars) in exchange for having your eye scanned.