Now that we have a clear definition of IoT, as something we get when we connect Things, not operated by humans, to the Internet, we are ready to begin our study of the subject. The definition includes four important components:
Connection, which relates to the study of communication protocols
Things, which relates to the study of sensors, actuators, and controllers, among other Things
Non-operation by humans relates to provisioning
The Internet relates to security, including identities, authentication, and authorization, but also to interoperability
This book will introduce all these concepts one at a time using simple and practical examples illustrating how these key concepts can be implemented using the Raspberry Pi platform.