LuminaCheck first, then share.
Before sharing, take 30 seconds to confirm your browser and system capabilities, then run one real share check in your meeting app. Lumina cannot guarantee that it stays out of view in every meeting app, share source and system combination.
Local browser check
This check reads only the capability information your browser exposes. It does not call getDisplayMedia automatically, does not open the system share picker, and does not upload any screen content. It cannot prove that Lumina stays out of the shared picture.
After the check, verify in the real app
When you choose "entire screen", "window" or "tab", a meeting app may take a different system path. Confirm the shared area with your real meeting app, a real share source and a second device; a browser check does not stand in for the meeting app's final behavior.
Use a blank document or a test window to confirm the shared area, and keep sensitive material out of this preview.
The visible boundary can differ between sharing a window and sharing the whole screen.
Screen reading can be turned off on its own; audio and other available context keep working as you set them.