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Documentation Index

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The opt-in consent checkbox allows you to collect explicit user consent before sending an SMS. This is useful for complying with regulations such as 10DLC, TCPA, or other messaging consent requirements. When enabled, users must check a consent checkbox on the phone number entry screen in the pre-built UI before they can proceed with SMS enrollment.

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Configuration

To enable the opt-in consent checkbox:
  1. Navigate to Authenticators in the Authsignal Portal
  2. Select SMS OTP
  3. Scroll to Pre-built UI settings
  4. Enable Show opt-in checkbox
Once enabled, a rich text editor will appear where you can configure the consent message displayed alongside the checkbox.

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Localization

The consent message can be configured per language. Select a language tab in the editor to provide a translated version of your consent message. If no message is configured for the user’s locale, the first available configured language will be used as a fallback.