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  • By Elijah Asaolu
    Passwordless Authentication With PHP Using Twilio Verify Passwordless Authentication with PHP using Twilio Verify

    Passwordless authentication refers to an authentication method that does not require a password or any other knowledge-based secret to log a user into a system. This method of authentication adopts the means of authorizing users by sending a unique, one-time code (OTP) or magic link to the user via email, push notification, or text message.

    In this article, you'll learn how the infrastructure underlying passwordless authentication works, and create a small app that uses this authentication approach.

    How it works

    Most passwordless authentication implementations have a single entry point, i.e., a single page for both new users signing up and for existing users logging in to their accounts.

    In a typical implementation, both new and existing users are asked to enter their mobile phone number during either registration or login. After verifying the mobile number, the system checks if the user is an existing one or a new one. If …

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