Installation & Activation — ndaact.ai

ndaact.ai has two complementary parts: a desktop app (which detects and redacts locally) and a browser extension (which protects your exchanges on claude.ai and chatgpt.com). The extension alone isn’t enough for advanced detection: it depends on the local app.

1. Install the desktop app

macOS: download the .pkg from your account area, open it and follow the installer. The package is signed and notarized by Apple (Gatekeeper shouldn’t block installation). The app launches automatically at the end of installation, so there is nothing to open manually. It registers to start with your session; you can disable this later from the menu bar icon’s menu. macOS will ask for notification permission on first launch: accept it to be alerted of protection status changes.

Windows: download the .msi and run it. The current release isn’t signed by a recognized publisher yet: Windows SmartScreen may show an “unknown publisher” warning. That’s expected for now; click “More info” then “Run anyway” to continue.

Once installed, the app lives in the menu bar (macOS) or notification area (Windows). Three possible icon states:

• Normal icon: protection active, detection model ready.
• Icon with a red “!” badge: local app unreachable or model unavailable. Protection is not active, and the extension blocks sending until it is.
• Icon with an animated arrow: detection model downloading (on first launch, or during a model update).

2. Install the Chrome or Edge extension

Install the extension from the Chrome Web Store. On first install, the extension automatically opens a tab on claude.ai and launches a short guided tour: it shows you how a sample of personal data gets detected and replaced by a marker before sending, then restored in the reply. You can skip the tour at any time; it stays available afterward from the extension popup (“Replay guided tour”).

3. Check that protection is active

Click the extension icon in your browser toolbar. The popup shows a status indicator:

• Green: full protection active (local app + detection model available).
• Red: local app unreachable, session closed or model unavailable. Sending is blocked until protection is restored.
• Grey: protection deliberately turned off for the current site (toggle at the top of the popup). Sending then goes out in clear, knowingly.

On claude.ai and chatgpt.com, a badge appears directly in the site’s interface to confirm the page is being monitored.

4. Link your account

Your license and subscription are managed from the desktop app, not the extension: the extension simply reads the status from the local app. If the extension shows you’re not logged in, a “Sign in via the app” button opens the sign-in flow in the desktop app; it goes through your regular browser, and your credentials do not pass through the extension itself.

Two devices, one license

The Solo plan covers two devices (for example your work computer and your personal one): install the app and extension on each, sign in with the same account.