ChatGPT 新增锁定聊天功能，支持 4 位数字 PIN
openai 为 chatgpt 引入锁定聊天功能，允许用户使用 4 位数字 PIN 或生物识别技术保护敏感对话。
openai introduced a new feature for chatgpt, allowing users to lock conversations to maintain privacy. locked chats can be secured with a 4-digit pin, face id, or touch id on supported devices. this feature is intended for situations where users discuss personal matters or plan surprises and want to keep those conversations private when sharing their device. locked chats are stored in a separate section, with their own memory that doesn't interact with regular chat history. the feature is rolling out to all chatgpt users, including free, paid, and enterprise plans, but is not available for temporary chats, group chats, or chats with scheduled tasks.