A cryptocurrency project described as being "dystopian" has been launched by AI entrepreneur Sam Altman. Worldcoin gives people digital coins in exchange for a scan of their eyeballs. In sites around the world thousands of people queued to gaze into silver orbs on day one of the project's full launch. The BBC visited a scanning site in London where people received free crypto tokens after going through the process. Mr Altman, the chief executive of Open AI which built chat bot ChatGPT says he hopes the initiative will help confirm if someone is a human or a robot. "Worldcoin could...