title: AWS Cognito User Pool without a password
body: <p>I want to use a phone number as the username for my app and i want to be able to make it simple to sign up by just having to verify the phone number each time they want to login - no messy password remembering business. </p>
  
  <p>How to do this with AWS Cognito User Pool as its asking me to mandatorily configure a password for each user.</p>
  
  <p>I thought of using a dummy password for each user and configure mandatory user verification. Everytime the user sign out i can "Unverify" the user so that next time they would automatically be asked to verify the phone number. Also i would wire up my app to only "login" if the user is verified. </p>
  
  <p>Please let me know if the is the best approach :( I'm new to AWS and i could't find any posts for this scenario.</p>
  
  <p>Thanks !!</p>