At our 24 July 2019 call [1] we talked about going into more detail on user journeys with SRC payment handlers, for example:

• User enrolls card
• User selects enrolled card to pay
• User has three cards issued by three different banks; what authentication will be required to display cards? Will three authentications be required?

We plan to create more detailed flow diagrams to help answer these questions.

[1] https://www.w3.org/2019/07/24-wpwg-minutes.html