Codex on Windows now has computer use capabilities, letting it operate desktop applications autonomously while you step away. OpenAI has also added a mobile bridge, allowing you to monitor or trigger Codex tasks from the ChatGPT iOS or Android app connected to your Windows machine.
The feature requires explicit opt-in through the Codex app settings. Once enabled, you can reference installed apps directly in conversation, and Codex acts on them. The mobile connection turns your phone into a remote control for whatever Codex is running on your desktop.
The video is worth watching for the setup flow details, specifically how app-mention works in conversation and how the mobile-to-desktop handoff is authenticated. Those implementation specifics matter more than the headline feature.
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