I don't even understand. Am I getting this wrong?? Does the payment processing happen inside the banking app?! Because if so, that's the bigger problem isn't it? All the checks for correctness should happen on the servers that the banking app connects to, not the banking app itself. If that's already the case, then what are they worried about? I'm probably missing something here, but honestly I just don't understand why they would do that.
I don't even understand. Am I getting this wrong?? Does the payment processing happen inside the banking app?! Because if so, that's the bigger problem isn't it? All the checks for correctness should happen on the servers that the banking app connects to, not the banking app itself. If that's already the case, then what are they worried about? I'm probably missing something here, but honestly I just don't understand why they would do that.