The book is intended for specialists in the field of information technology and information security who want to effectively use smart cards in their activities. It introduces the reader to basic concepts from the field of smart technologies, industrial standards, cryptographic algorithms and protocols. Theoretical material is illustrated by life examples from various applications of smart technologies, including payment systems, electronic documents and others. The book will help the reader master the development of their own smart card applications using standard applications or JavaCard technology. The publication can be useful for students, graduate students, engineers and developers interested in smart cards.