Ghosted pauses media or locks screen on Mac

Sharp idea, and the value is mostly in how invisible it is when it works well.

• –Strong privacy posture: on-device detection and no account model are a good fit for a utility that watches presence.
• –The core benefit is interruption reduction, not novelty; that makes the product easy to understand but also harder to wow with in a screenshot.
• –Best fit is Mac users who leave media, calls, or sensitive work open while stepping away frequently.
• –The main risk is accuracy: false positives or slow resume behavior would make the whole thing feel annoying fast.