Implementing (Short-string) Payment Methods in the Browser
What is the implementation burden for UAs to add new payment methods?
Basic-card is exceptional because the browser IS the payment handler so it must perform some functions of the payment handler (like validation of the payment method specific data) but it's not clear how much of this will be done for other payment methods.
Basic Card
Marcos has requested that we reconsider the decision that this be a Note. We have twice made that decision. We should close it definitively after hearing the case.
@adrianhopebailie - This should not be seen as a revision of the previous decision to publish all payment method specs as notes but rather as an exception for basic-card given that the browser will implement payment handler functionality for this payment method. This may be influenced by previous discussion on implementing these payment methods.
BPCE, Worldpay, and Klarna indicated at the Chicago meeting that they are potential implementers. Google also expressed interest in this payment method.
Feedback required from credit transfer systems. Unify/Atos have joined the WPWG, any feedabck on this spec at this time?