ChatGPT's desktop app on macOS has introduced a new feature called Computer History, which logs users' interactions and uses this data to learn their workflow. The feature builds a timeline of user activity, allowing ChatGPT and its companion tool Codex to reference this information when responding to user requests. This data collection aims to improve the AI's ability to suggest automations and complete tasks left unfinished. The feature is available in the desktop app, but its implications for user data and AI training are unclear. This development highlights the importance of understanding how AI systems gather and utilize user data.