**Your authenticator app displays 2FA codes to anyone who glances at your phone — I built one that requires a physical combination on your watch first**

Most TOTP apps have a quiet problem: open the app, codes are right there. Anyone nearby who sees your screen — or grabs your unlocked phone for a second — has your 2FA codes.

RotarySafe works differently. Your codes are in an encrypted vault on your phone. To open that vault, you have to enter a physical rotary combination on your Wear OS watch — like dialing a safe. Four steps, each a number of clicks left or right on the watch bezel. Get it wrong three times and it locks until you clear it from your phone with your fingerprint.

The codes never appear on screen until the combination is correct. And since it holds no internet permission, nothing ever leaves your devices.

It's in closed testing right now and I'm looking for people who care about 2FA security to use it daily and give honest feedback.

**To get access:**

1. Join the testing group → [https://groups.google.com/g/rotarysafe\_closedtesting](https://groups.google.com/g/rotarysafe_closedtesting)
2. Register as a tester → [https://play.google.com/apps/testing/com.luly.rotarysafe](https://play.google.com/apps/testing/com.luly.rotarysafe)
3. Install the app → [https://play.google.com/store/apps/details?id=com.luly.rotarysafe](https://play.google.com/store/apps/details?id=com.luly.rotarysafe)

On the "Become a Tester" page, click the link that says "Download it on Google Play."When you click to "buy" it, Google will show a message: "Test card: Always approves" or "You will not be charged."This meaning 0 cost for you now and after the testing, by the group membership.

You'll need a Wear OS smartwatch — the physical combination is the whole security model, so it can't work without one. Imports from Google Authenticator if you want to move accounts over easily.

Testers needed for a new Bezel-based 2FA app (RotarySafe)