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I don't know enough about how it all works, but perhaps -- because the number isn't valid on its own -- giving the number to a different customer, with a differ
by danellis 12y ago
I don't know enough about how it all works, but perhaps -- because the number isn't valid on its own -- giving the number to a different customer, with a different name, effectively invalidates its previous use and means it can be safely reused.
- andyjohnson0 12y agoSome information here: http://en.wikipedia.org/wiki/Controlled_payment_number http://en.wikipedia.org/wiki/Controlled_payment_number