European regulators, including CNIL and the Bavarian state authority, are worried about how Worldcoin collects data. They doubt the legality of collecting biometric data and storing it. Worldcoin's plan to scan the irises of millions of people in 20 countries to grant them a "digital passport" called "World ID" and reward them with 25 WLD has raised concerns about data privacy, security, and collection. Although Worldcoin attracted 2.1 million sign-ups during its trial period, it has struggled to gain new users and has attracted attention from regulators and crypto experts.