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A comment on Japan facing credit card number shortage. Parent comment

Re:Japan facing credit card number shortage by GoblinSlayer on Wednesday August 26, 2020 @07:21AM (#24281377)
Tracking is traditionally done with discount cards, and they are compatible with all payment methods. And there are applications that aggregate those discount cards in software: a discount card is just a short ID, nothing fancy.
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Re:Japan facing credit card number shortage by xxpor on Wednesday August 26, 2020 @11:22AM (#24283254)
That's true in grocery stores but not other retailers.
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