SMS in Two-Factor Authentication
SMS can be used to as an authentication (2FA) method in two-factor authentication. You can use a built-in 2FA account to handle SMS authentication, but if you have an SMS account configured for messaging, you can also use that account to handle authentication.
- To enable an SMS account for 2FA, when configuring your SMS service, select Two factor authentication under Usage.
- Go to Setup > Access > Two Factor Authentication.
- In the Two Factor Authentication screen, select Text message (SMS) under Authentication Method and confirm the message content.
- In the SMS Account drop-down, select the SMS account you configured above.
- Choose whether to use an Alphanumeric Sender ID for the messages. An Alphanumeric Sender ID is used instead of a phone number to serve as the sender for the authentication codes, and is required in some countries. If you select the Use Alphanumeric Sender ID checkbox:
- Enter the ID you want to use. Note that some countries require you to pre-register your Alphanumeric Sender ID before you begin using it. Make sure to check the requirements for any countries you operate in.
- Select the countries in the list where you want to use the Alphanumeric Sender ID. Hold Ctrl to select more than one. If you accidentally select a country that doesn't support Alphanumeric Sender ID, the system automatically uses the phone number instead.
- Click Finish.
Now, when someone logs in, they receive an SMS message with a security code.