This book has been written to meet the course on wireless sensor networks, their basic features and deployment of Electronics and Computer Engineering Curriculum for the undergraduate and postgraduate students. The book is especially useful for the practicing engineers who want to fully exploit this new technology for their project and research ideas. The techniques of wireless sensor networks is an important part of the communication and networking protocols where students apply their knowledge in designing their own wireless sensor networks systems. The authors present this book in a very lucid style and makes complex concepts and processes easy to follow and understand even for average student. The book focuses on limited important topics in the field that covers the entire basic essential concepts with a broad introduction to give an idea about its deployment and its basic features. The text in this volume covers the topics such as communication and networking protocols, wireless sensors, current applications and promising research and development, architecture for wireless sensor networks, and security. The detail analysis of concepts illuminated with illustrative examples is a unique feature of this book. Written in a student-friendly manner, the book is enriched with the following features: Detail analysis of topics covering the basic features and applications of biomedical engineering. Straight forward approach to illustrate the concepts. Detail theory about the application of wireless sensor networks. Discuss and describe the ideas for the salient features of the wireless protocol study. Discuss and present a thorough analysis of the technology that engineer and students need to understand and design for the future applications that will incorporate wireless sensor networks.