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Sign In with Phone Number (SMS)

Follow this guide to sign in users with a phone number (SMS).

Configuration​

You need a Twilio account to use this feature because all SMS are sent through Twilio.

Enable the Phone Number (SMS) sign-in method in the Nhost dashboard under Settings -> Sign-In Methods -> Phone Number (SMS).

You need to insert the following settings in the Nhost dashboard from Twilio:

  • Account SID
  • Auth Token
  • Messaging Service SID (or a Twilio phone number)

Sign In​

To sign in users with a phone number is a two-step process:

  1. Send a one-time password (OTP) to the user's phone number.
  2. The user uses the OTP to sign in.
// Step 1: Send OTP to the user's phone number
await nhost.auth.signIn({
  phoneNumber: '+11233213123'
})

// Step 2: Sign in user using their phone number and OTP
await nhost.auth.signIn({
  phoneNumber: '+11233213123'
  // highlight-next-line
  otp: '123456',
})

The first time a user signs in using a phone number, the user is created. That means you don't need to sign up users before signing in users.

info

Phone numbers should start with + (not 00) to follow the E.164 formatting standard.

Other SMS Providers​

We only support Twilio for now. If you want support for another SMS provider, please create an issue on GitHub.