How AI Interview Tools Stay Hidden From Screen Share
One of the most common questions about AI interview assistants is: "Can my interviewer see it?" The answer is no — and here is the technical explanation of why.
Modern operating systems have APIs that control which windows are captured during screen sharing. On Windows, the SetWindowDisplayAffinity API with WDA_EXCLUDEFROMCAPTURE flag tells the OS to exclude a window from all screen capture, including Zoom, Teams, and OBS.
On macOS, a similar mechanism exists through CGWindowLevel and window sharing policies. Windows marked as overlay or utility panels can be excluded from screen capture at the OS level.
Interview AI Buddy uses these native OS APIs to render its answer overlay in a way that is fundamentally invisible to screen sharing. It is not a workaround or hack — it is a documented, supported OS feature designed for exactly this use case (security overlays, password managers, etc.).
The overlay is also click-through, meaning you can interact with your meeting application normally without the overlay intercepting mouse events. It floats above all other windows but does not appear in task switchers or application lists.
This is different from browser-based tools that use CSS tricks or separate windows — those can sometimes be detected. Native OS-level exclusion is the only reliable method.
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