Re: [webpayments] Should we standardise a callback mechanism for payment apps to communicate to 3rd parties? (#76)

It's easy to envisage a way to add this to the PaymentRequest API but I'm not in favour of doing so. The use cases seem very theoretical and I'm not convinced they will occur in practice. This doesn't seem like it is needed as a v1 feature and is something we could add later if needed.

I'm not a fan of setting up arbitrary communication channels between pages and plug-ins - it means that the payment method ecosystem will struggle to scale since people will have to write lots of payment app specific code.

I think the answer for now should be no.

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Reply to this email directly or view it on GitHub:
https://github.com/w3c/webpayments/issues/76#issuecomment-182732985