ChatGPT now lets you lock chats behind a PIN

Locked chats hide the conversations you pick from your chat history, pinned chats and search. They open with a 4-digit PIN, or Face ID, Touch ID or device unlock on supported phones, and are rolling out gradually to Free, Go, Plus, Pro, Business, Enterprise and Edu. The fine print: it's not end-to-end encryption, and resetting your PIN permanently deletes all locked chats.