Runs entirely in your browser. Nothing is sent anywhere. View raw detection source
Overlays, banners or messages that indicate an active teacher session, focus mode or tab control.
Qustodio-style time limits, usage reports or "monitored by" notices.
Injected nodes, styles, storage keys, cookies and window objects left behind by the extension.
How this works. The page probes each known Linewize / Classwize / Qustodio extension for a public file, then keeps sweeping this tab every couple of seconds for anything a content script leaves behind: injected nodes and iframes, vendor stylesheets, storage keys, cookies, window objects, page-root markers, postMessage traffic and custom events — plus on-screen wording that matches classroom controls or parent-alert notices.
Limits. If monitoring happens purely at the browser or network level and never touches page content, it leaves no in-page trace and "Being Viewed" stays Unknown. Wording matches can also come from unrelated text, so treat every signal as a hint, not proof.