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Overview

LoginRadius One-Touch Login offers a modern, passwordless authentication flow where users can register and/or log in without entering a password. Instead, authentication is completed via a verification link sent to the user's email or a one-time passcode (OTP) sent to their phone.

This method is highly user-friendly and especially effective for applications that require fast, frictionless authentication, such as Smart TVs, mobile apps, and IoT devices.

Note: Refer to our Advanced JS Customizations guide if you're using LoginRadiusV2.js to implement One-Touch Login.

Key Capabilities

  • Passwordless Registration & Login: Users can sign up and authenticate using email or phone.

  • OTP or Email Verification Support: Supports email links and SMS-based OTP for flexible flows.

  • No Pre-Existing Account Required: Enables login or registration even if the user doesn't exist in the system.

  • Real-Time Status Polling: Use the One-Touch Login Ping API to track login attempt status via GUID.

  • Frictionless UX: Reduces user entry barriers, improving engagement and accessibility.

LoginRadius API Usage for One-Touch Login

1. One-Touch Login by Email

  • Initiate login using the One-Touch Login by Email API.

  • Generate a unique GUID to track the login attempt.

  • Begin polling using the One-Touch Login Ping API with the GUID.

    • The Ping API will return error code 1139 until the user clicks the email link.

  • A verification email containing a link with a token is triggered.

  • The One-Touch Email Verification API verifies the token when the user clicks the login link.

  • If verified, the login status associated with the GUID is updated.

  • The next Ping detects the verification, and the user is logged in.

2. One-Touch Login by Phone

  • Initiate login using the One-Touch Login by Phone API.

  • The API sends a one-time passcode (OTP) via SMS.

  • The user enters the OTP.

  • The One-Touch Verify OTP API is used to verify the OTP token.

  • On success, the user is authenticated and logged in.

Note: This flow is similar to Passwordless Login by Phone, but includes registration + login support in one step.

Related Resources

Advanced JS CustomizationsCustomer Identity APIsSession Management