2.24 SMS OTP

The SMS OTP method facilitates you to generate a single-use password or OTP and send it to the registered mobile number for authentication. You can use this OTP to authenticate within a short time frame.

When authenticating on the same smartphone that receives SMS, you can do one of the following actions based on the platform of smartphone:

  • iOS: The OTP auto inserts to clipboard, tap on the input field > OTP displayed above the keyboard.

  • Android 11 and later versions: Tap Copy <OTP> in the SMS notification then tap on the input field > OTP displayed above the keyboard.

  • Android 10 and prior versions: Open the SMS notification and copy OTP. Tap on the input field > OTP displayed above the keyboard.

NOTE:The OTP period is set to 120 seconds by default. An administrator has the privilege to change the OTP period.

NOTE:If a phone number is not registered in the repository for a user profile, then the SMS OTP method is not enrolled automatically. However, you can manually enroll the SMS OTP method from the Add Authenticator section.

2.24.1 Enrolling the SMS OTP Authenticator

  1. Click the SMS OTP icon in Add Authenticator.

  2. (Optional) Specify a comment related to SMS OTP authenticator in Comment.

  3. (Optional) Select the preferred category from Category.

  4. Specify the mobile number in Phone number.

    A message Verification is sent to <phone number> is displayed.

  5. Specify the verification code in Enter verification code to confirm the phone number is valid.

  6. Click Save.

    A message Authenticator "SMS OTP" added is displayed.

NOTE:An administrator has the privilege to hide the Phone number and verification code to prevent users from providing new phone number that is not registered in the repository.

2.24.2 Testing the SMS OTP Authenticator

  1. Click the SMS OTP icon in Enrolled Authenticators.

  2. Click Test.

  3. You will receive an SMS with an OTP.

  4. Specify the OTP in Password.

    NOTE:If you receive multiple SMS, specify the OTP sequence prompted on the screen.

  5. Click Next.

    A message Authenticator "SMS OTP" passed the test is displayed.

The following table describes the possible error message along with the workarounds for the SMS OTP authentication.

Table 2-11 SMS OTP authenticator - error messages

Error

Possible Cause and Workaround

Incorrect OTP password

The specified OTP is invalid. Specify a valid OTP and try again.

You do not have a phone number. Contact administrator or Helpdesk and register your phone

If your phone number is not registered in the repository. Contact administrator or helpdesk to register phone number.