The technology that enables flexible electronic payments for goods and services is often referred to as digital payment systems. These systems include mobile wallets, contactless payments, and online payment gateways that facilitate transactions through smartphones, smart cards, or computers. Popular examples are PayPal, Apple Pay, and Google Pay. They leverage technologies like tokenization and end-to-end encryption to secure transactions. This flexibility not only speeds up the payment process but also enhances convenience for consumers, allowing them to make purchases anytime, anywhere.