Re: [paymentrequest] Overridng Common Payment Instruments (#21)

But there is the opportunity for payment processing (e.g. authorisation or push) to occur inside the payment instrument. You are proposing no processing for cards, but how might that change in the future? For example a reasonable use case it to tokenise the card details prior to sending onto the merchant, the current proposal allows extension for the non-standard payment instruments via the registration process, but not for cards. The only way I could see this occurring in the flow as stands is by defining a new payment type, e.g. CardToken.com. This would have a number of issues associated with it, not least the inability to use the card numbers in the (browser) wallet.

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Reply to this email directly or view it on GitHub:
https://github.com/WICG/paymentrequest/issues/21#issuecomment-157817660