I am building an Alexa Skill that will implement Account Linking. When a user uses my skill, they would have to use the Alexa App to sign-in.
The Authentication UI is set up and managed by Amazon Cognito so that I don’t have to host my own sign-in and sign-up UI for my Alexa application.
My User Pool in Cognito has two standard and one custom attribute.
The sign-up form (hosted by Cognito) includes text-fields for the standard attributes, but not for the custom attributes. I want text-fields for all attributes (standard and custom). I couldn't find any documentation that shows how to allow this. How do I do it?
I was interested too, but i think is not possible using the Login Web Page hosted by Amazon cognito. I've found this information on Amazon Cognito guide: https://docs.aws.amazon.com/en_us/cognito/latest/developerguide/cognito-user-pools-app-integration.html
At the end of this document i've found:
Note
The Amazon Cognito hosted sign-in web page does not support the custom authentication flow.