The technology that underlies mobile payment systems typically includes Near Field Communication (NFC), secure tokens, and cryptographic protocols. NFC allows devices to communicate by placing them in close proximity, enabling transactions without physical contact. Additionally, the use of tokenization replaces sensitive data with unique tokens, ensuring that actual financial information is not transmitted during transactions. Mobile payment apps also rely on secure elements within devices to store payment information securely. Together, these technologies facilitate convenient, swift, and secure transactions, revolutionizing payment methods in finance.