[smacktoward]

American Express provided something similar to this with the first iteration of the Amex Blue card, though the implementation details were probably different since that was back in the early 2000s. They gave each cardholder a card reader that plugged into your PC, along with other handy stuff like software that could generate one-time use card numbers linked to your account. It was all pretty whizzy, though Amex dropped it like a hot rock when it failed to get much traction.