Authentication gate
Control who can open a share link: ask people to sign in, so each response has a verified email, or protect the form with a password.
Both gates apply to share links only. A request goes to one recipient on their own link, so it skips them.
Require sign-in
Open Settings, the Public link access tab, and turn on Require sign-in. People then sign in with Google or a link sent to their email before they can open the form.
- Their email is saved with the submission.
- Unfinished answers belong to their account, so they can continue on another device.
Each person can submit once across all their devices, unless you allow more under Limits per respondent.
Use it for internal forms, where every answer should carry a verified company email, for customer-only forms, and for forms where anonymous answers are too risky. Sign-ups and contact forms lose answers when people have to sign in, so use bot protection on those.
The gate verifies the person who opens the form. To verify an email address typed into an Email question, use Respondent email verification, which sends a one-time code and works without sign-in.
Password
Turn on Password in Settings, Public link access, and type a password. Visitors see “Password required” and none of the questions until they enter it. Anyone with the password can submit.
Turn on the switch and set a password together
If the switch is on but no password is saved, publishing warns you, and the form stays open to everyone.
Changing the password
You can change the password at any time. People already filling in the form can finish; new visitors need the new password. To stop one password from being reused without end, add a response limit to the share link. A limit of 1 makes the link single-use.