SMS One-time passcode (OTP) authentication

  • 릴리스 버전: Australia
  • 업데이트 날짜 2026년 03월 12일
  • 소요 시간: 2분

    • SMS one-time password (OTP) authentication is a method used to verify user identity by sending a temporary, numeric code to the user's registered mobile number. The user enters this code to complete authentication.

    Use case

    • Serves as a secondary authentication factor, particularly for users without authenticator apps.
    • Recommended for medium-risk scenarios, such as verifying changes to profile information and approving login attempts.

    Key strengths

    The SMS OTP method offers the following advantages:

    • Familiar and easy for users to adopt
    • No additional app installation required
    • Simple to deploy and integrate

    Important considerations

    While SMS method is a convenient authentication method, there are several considerations to keep in mind:

    • Vulnerable to SIM-swapping, interception, and delivery delays.
    • Reliant on mobile network availability.
    • Not recommended as the sole authentication factor for high-risk or sensitive operations.

    SMS OTP can enhance overall security when used appropriately. For detailed configuration instructions, see Multi-factor authentication Providers.