This text introduces the law of payment systems in a way that promotes understanding and furnishes a sound foundation for any further study of the subject. It includes portions of Articles 3-4, 4A, 5 and 7 of the Uniform Commercial Code, as well as federal law dealing with credit and debit cards. The term "e;payment system"e; refers to a wide variety of methods of paying debts, including currency, digital cash, checks, drafts, credit cards, electronic funds transfers, and letters of credit. The text provides the scope and highlights you need to excel in understanding this field.