Re: [w3c/payment-request] Prevent double spending through retry (#882)

Hi @crowgames,

The paymentRequestId attribute should help. It is set to the (unique) id of the payment request [1]. So the payment handler should be able to know that this is the same transaction.

Let me know if this would work for your use case.

Ian

[1] https://www.w3.org/TR/payment-request/#id-attribute

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