The technology enabling contactless payment systems primarily relies on Near Field Communication (NFC) and radio-frequency identification (RFID) technologies. These systems facilitate secure, quick transactions by allowing devices like smartphones or credit cards to communicate wirelessly with payment terminals. When the device is brought close to the terminal, data is exchanged to authorize the transaction without physical contact. This technology enhances convenience for consumers, streamlines the checkout process, and promotes sanitary practices in financial transactions, particularly gaining momentum during global health concerns.