I am working on voice features for an app, where generally users are authenticated via OTP (Basic authentication) sent to entered mobile numbers. I access the app resource servers with Alexa using APIs. I wish to authenticate users using account linking.
I was trying to make use of login with Amazon but I'm waiting on some information from the app developers. I understand that for account linking in Alexa with LWA, the user would give Amazon account details but I don't want to login into my app with Amazon credentials. I was wondering if there was any other alternative as I don't want to change the login information from phone number to email id when logging into the app on the phone.
I have no experience in servers hence I would like to avoid setting up my own Auth server.
Any input would be highly appreciated!