Basically self explanatory, Lets say i have an app i want to buy something however I don’t have enough and then someone pays me on the app and I have enough money, how does the card know you have the right amount of money without wifi and how does it uptade real time with no internet
In: Technology
The card isn’t really seeing how much money it has. It gives information to the card terminal which shoots that to various card services that’ll talk to a bank for it.
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