We will create a login system with OTP.
Approach : TDD ( Test Driven Approach) is very important.
Writing tests for almost every section of our app for making our app with non breakable code.
Goal : Building a simple login system but challenge is to restrict user to limit access untill user verifies the OTP we send to either Email or on SMS.
Why create this: This is now a days very important security feature to enhance your app security.