This document discusses different types of digital tokens and electronic payment systems. It defines e-payment as paying for goods or services electronically instead of using cash or checks. The main types of e-payments discussed are cards (debit cards, credit cards, prepaid cards), internet payments, mobile payments, and person-to-person payments. Cards can be issued by banks and used to purchase items, withdraw cash, and transfer funds. Internet and mobile payments allow online purchases and transfers using bank accounts or cards. Person-to-person services enable transfers between individuals online.