OpenAI's Computer History feature records user interactions on Mac devices, including clicks, keystrokes, and app switches. This data is stored locally as unencrypted Markdown files and can be searched to create a timeline for use in ChatGPT and Codex conversations. OpenAI claims the data is not used for AI training, but it may still be incorporated into training data through conversations. This development raises questions about user data collection and potential implications for user privacy. This matters because it highlights the need for transparency and clear policies around user data collection and usage.