Use Shopify Customer for Auth0 Login

Shopify Partner
1 0 0

Hi there! 

I am trying to build a Auth0 Application which uses the Shopify Customers as single source of truth. 

  • I can't use multipass - to expensive
  • I can't use Storefront API - customer data (e.g. emails) would be publicly available

Creating & Updating Customers is possible via Admin API, but how do I verify if Username/Password is correct? 

Is there a way?