NEWJOSSY | Stripe Developers | Page 1

turbid bridgeBOT Dec 20, 2022, 1:07 PM

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shrewd sundial Dec 20, 2022, 1:07 PM

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hi! what's the problem exactly?

astral flare Dec 20, 2022, 1:09 PM

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I can have 2 the same cards, only thing which is different is payment_method.id

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Like I can add two cards with same card number, expire date and other info and they will be added as different payment methods

shrewd sundial Dec 20, 2022, 1:14 PM

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yep, we don't enforce that cards have to be unique

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there's a fingerprint field : https://stripe.com/docs/api/payment_methods/object#payment_method_object-card-fingerprint which identifies when two pm_xxxs are the same underlying card

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it depends overall how you integrate but you can check that value on a customer's existing payment methods before adding one

astral flare Dec 20, 2022, 1:16 PM

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Can you give more detailed info about this fingerprint? How it should be used?

shrewd sundial Dec 20, 2022, 1:17 PM

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sure, what specific question do you have about it?

astral flare Dec 20, 2022, 1:19 PM

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Finger print should only be used when I am getting list of payment methods, right ?

shrewd sundial Dec 20, 2022, 1:22 PM

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not sure what you mean. It's a field returned on the PaymentMethod object

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if you list PaymentMethods, each one will have a fingerprint

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depending on how yur integration works, you might create a new PaymentMethod from the input the customer enters, and you can compare the fingerprint on that PaymentMehod to the ones you get from listing other PaymentMethods on a certain Customer object.

astral flare Dec 20, 2022, 1:26 PM

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Ok, I think I understood. So I need to compare finger print of existing payment method and the newly created, is it right?

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