Anthropic: Authentication is only for a small number of suspicious accounts with potential fraud or violations.

Claude has quietly implemented identity verification requirements, requiring some users to provide government-issued identification documents and a real-time selfie when accessing certain functions, undergoing platform integrity checks, or fulfilling compliance measures. This is the first mainstream AI chatbot to require such verification. Anthropic stated that the verification data is only used to confirm user identity and is currently only applied to a small number of suspicious accounts with potential fraud or violations. The identity verification is technically supported by partner Persona, and the verification data is stored on Persona servers and encrypted; it is not used for model training. This move has sparked dissatisfaction among some privacy-conscious users.