email otp sms Email OTP Login with an OTP code is a secure method for the user authentication process. In this method, a one-time password is generated dynamically and sent to the user who attempts login. OTP can be sent to the user’s email or his mobile phone. When the user enters the OTP code then the application will authenticate the user via this code. In this tutorial, we are going to see an example to authenticate user login via an OTP code using email. You can check our mobile sms otp too! In this example, when the registered user enters email to login, an OTP code is sent to the email address. Using this OTP code the user will be validated. Once the user uses this code then it will be invalid, meaning it cannot be used again. Also, this token will be valid for a day, then it will be expired. Login form with OTP The following code shows login form to the user to enter his email address. On entering email, it shows an input to enter the OTP code sent to his email addres...
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