The WSJ is reporting that many banks are thinking about creating a limit on how much you can spend on your debit card. Specifically, JP Morgan Chase & Co is thinking about setting a $US100 maximum per transaction.
I always wondered how credit card companies came up with the digits on my Visa and AmEx. Random chance? Geographical location? Spending habits? Turns out all credit card companies follow the same set of rules. Here’s what the numbers mean:
