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 cheques, identity theft, confidence tricks, etc.). The position also requires tellers to be friendly and interact with the customers, providing them with information about customers' accounts and bank services.
As frontline staff, they are most likely to identify and halt fraudulent transactions to avoid bank losses (counterfeit money, checks, identity theft, confidence scams, etc.). The role also demands tellers to be amiable and engage with customers, offering information about their accounts and banking services.