Using an authenticator app on your Mac

If you work on a Mac, the phone-in-hand ritual gets old fast: open the app, squint at six digits, type them before they expire. Getting the codes on the Mac itself removes that.

How it works

Authenticator App - Novaz runs on macOS and keeps the same accounts in step with your iPhone and iPad, so a code you can see on your phone is also on your desk. Setup is short:

1. Install the app on your Mac and sign in to the same iCloud account.
2. Turn on sync — see syncing across your Apple devices.
3. Your existing accounts appear; codes match on every device.

Because TOTP codes are derived from time and a shared secret, every device shows the same digits at the same moment. Nothing is being sent between them at sign-in.

The trade-off worth thinking about

Two-factor authentication works best when the second factor is separate from the thing you're signing in with. If you browse, store passwords, and generate codes all on the same Mac, someone who fully compromises that Mac has everything.

That's a real consideration, not a dealbreaker. Two ways to keep the benefit:

• Lock the app with Touch ID or a PIN so it isn't simply open — App Lock.
• Keep your phone as the primary for your highest-stakes accounts (email, banking), and use the Mac for everyday sign-ins.

What about a browser extension?

Extensions are convenient but live inside the browser you're being phished in. If you use one, be doubly careful about real-time phishing pages — no code, on any device, protects you from typing it into a fake site.

Before you rely on it

Make sure your accounts are backed up before you make the Mac your main device — encrypted iCloud backup — and keep the recovery codes each service issues.