This book provides an introductory level overview of payment systems. It is consists of four chapters, dealing in turn with credit cards, non-card payment methods, (breaking) rules and business models.
Overall, the exposition is rather superficial, maybe suited for a first-year business student or a journalist beginning to write about finance. Personally, I was hoping for more details, especially on the software side of payments. The chapter on credit cards is the best in my view, as it is still more detailed than the other ones, and at least provides a lot of references and keywords to continue one's own studies. For future editions it might be a good idea to split the book up into a series of small handbooks (e.g. one for each chapter) and provide more technical details in every one of them.