...Once installed in browsers like Chrome, Firefox, or others that support standard extension APIs, it can detect 2FA prompts on login forms and offer to fill or suggest one-time passwords generated by your 2FAS mobile clients or local vault, reducing friction and manual copy-paste steps. The extension communicates securely with companion mobile or desktop clients to fetch or synchronize token data, respecting encryption and privacy boundaries so that secrets are never exposed to the extension itself without user consent. It also lets users manage or view registered accounts, add new ones by scanning QR codes via companion apps, and handle token organization from within browser UI elements.