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Nudj uses one-time passcode (OTP) email authentication. Older installations may still show a magic-link flow, but new sign-in uses the passcode flow by default.

The OTP flow

  1. Enter your email on the sign-in screen.
  2. Check your inbox — a short numeric passcode arrives.
  3. Enter the passcode in the sign-in drawer.
  4. You’re signed in.
Email scanner detection. Some corporate email services scan links before delivery, which can consume a one-use passcode. If your login appears to “expire” immediately, request a new code — the system detects scanner-consumed passcodes and lets you retry cleanly.

Resend timer

There’s a short cooldown before you can request a new passcode. The resend timer persists if you navigate back to the email step, so you don’t lose progress in a confusing way.

Mobile keyboard handling

On mobile, the sign-in drawer positions itself so the on-screen keyboard doesn’t cover the input. Tap the email or passcode field and the drawer adjusts automatically.

Email validation

Common typos (missing @, invalid domain) are caught before the passcode is sent, so you don’t burn attempts on a typo.

Anonymous / guest sign-in

Some communities allow you to enter as a guest without providing an email. When supported, the sign-in modal shows a Continue as guest option. Guests get restricted access — see Anonymous accounts.

Third-party login methods

Communities can enable additional login methods (social, enterprise SSO, API link). If configured, these appear in the sign-in drawer alongside email. When you land on a guarded action (like, comment, redeem), the login modal shows the configured options.

Login modal triggers

You’re shown the login modal when:
  • You open a restricted page while not signed in.
  • You tap a guarded action as a guest (like, comment, redeem, claim).
  • Your session expires.

Signing out

From the profile drawer, tap Sign out. Your session is cleared and you’re returned to the sign-in screen or the guest view, depending on community configuration.

Anonymous accounts

Guest access + conversion.

Communities

Joining after sign-in.

FAQs

Common sign-in questions.