I’m not sure what your differentiation with american express is.
They’re the same thing as visa and mastercard, they’re another card company that’s just accepted in less places due to their higher fees.
Basically visa, mastercard, and american express designed the encryption systems and scanners their cards use, and work to get them standardised and accepted everywhere.
Banks use them because it’s easier than making the whole thing over again themselves.
No point reinventing the wheel.
If a bank tried to make their own system they’d have to convince everyone else to accept it, whereas if you just go “here’s a visa card” it’ll work everywhere with no effort
Latest Answers