response: They do have to be able to stop and detect any signs of fraud from customers.
history: bank tellers seem like they dont care for their job Well, I know that they thye are known as cashier in some places oh yea? makes sense. Bank tellers have to at least acquire a high school diploma and have experience with cash. oh so not much requirements to it
knowledge: Being front line staff they are most likely to detect and stop fraudulent transactions in order to prevent losses at a bank (counterfeit currency and checks, identity theft, confidence tricks, etc.).