cnguyen-fingerprints | Stripe Developers | Page 1

proven knot Oct 13, 2021, 3:34 PM

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Hello, manage in what way?

full delta Oct 13, 2021, 3:37 PM

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My user can enter multiple times his card. It will generate the pm_XXX. When I create the PI according to it, the best is to check if my customer has already this card with the fingerprint ? And use the saved one ? Or I use the new one and update (or replace?) the saved one ?

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Because maybe it's good to always use the saved one if it's always the same.

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Example:

Shopper buy for the first time with 3DS => I create a PI with a new PM. And I (need to) save this PM for off_session payment and for saved_card system
Shopper come back here. I don't know yet if it's a known customer. The shopper enter his card again (and it coule be the same or a different one). I generate the PM with it and create the PI. And make the payment with it.

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So, if it's the same card, I hesitate between :

Check when I generate the PI if it's a known customer and if the saved card has the same fingerprint.
1. And if yes, use it ?
2. Or use the new one and replace the saved one by the new one ?

Knowing that the customer, on the first purchase, can have a subscription associated to his saved card.

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And I don't know if I do nothing, if the customer will has a lot of "same" card

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@proven knot ?

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@waxen knoll or @past prawn ? Because Pompey is maybe left ?

proven knot Oct 13, 2021, 4:06 PM

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Apologies, still here but have been busy. I will catch up on this in a moment

waxen knoll Oct 13, 2021, 4:06 PM

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i'm looking will answer in a bit

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When I create the PI according to it, the best is to check if my customer has already this card with the fingerprint ? And use the saved one ? Or I use the new one and update (or replace?) the saved one ?
The best approach is to show them their saved card, like Amazon does. And they can select that one. If they prefer to enter card details again, they could still enter the same card (why? not sure, but people might do that). In that case I would confirm with that card really, you have the CVC already, it's done 3D Secure, it's just the right flow. And then after the confirmation succeeds you can detach/delete the old duplicate one and keep the most recent one

full delta Oct 13, 2021, 4:22 PM

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I can't display their saved card. If I could, ofc I will do it

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So the best way is to replace the old one by the new one. OK

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I can replace it? Or I need to detach and delete it?

waxen knoll Oct 13, 2021, 4:29 PM

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I can't display their saved card. If I could, ofc I will do it
Why save their card if you can't display it and re-use it later?

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And the best way is to just confirm your PaymentIntent with the new card, and after that detach the old one

full delta Oct 13, 2021, 4:34 PM

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OK it's good to just detach the old and no delete it

#cnguyen-fingerprints