Germany's Bavarian Data Protection Authority (BayLDA) has issued an ultimatum to Worldcoin, co-founded by Sam Altman, over non-compliance with GDPR regarding biometric data management. Worldcoin must implement a compliant data deletion procedure within 30 days, allowing users to assert their right to erasure. In response, Worldcoin has appealed the decision, citing its anonymization technologies, while also planning to delete its old system by May 2024, although some illegally collected records remain a concern for regulators.