For added security, a one-time verification code can be sent to the signer before they can fill out the document. The "require verification" option is available from the "send sign request" modal. Please note that this feature is only available on a Pro plan subscription. See the screenshots below for reference.
The recipient will then need to click the "Send Email Verification" button before accessing the document.
The recipient can click on the "resend" option if they need to resend the one-time code.
The one-time 6-digit code will be sent to the recipient's email.
