A Point-of-Sale (POS) terminal is a hardware device used by merchants to process payment transactions, typically involving credit or debit cards. It reads payment information, communicates with payment processors to authorize transactions, and prints receipts. POS terminals are commonly found in retail stores, restaurants, and other businesses where goods or services are sold. They may also support contactless payments, mobile wallets, and integration with inventory or sales systems. Ensuring the security of POS terminals is crucial, as they are frequent targets for cyberattacks aiming to steal payment data.