This book focuses on finding out what Internet Of Things (IoT) applications developers need to have in mind while developing IoT applications. The IoT applications are made and used by the people. And therefore it is important to consider the users and how to facilitate their understanding of the IoT applications with little or no help from the outside. Currently we live in a world that moves so fast that we have got no time to even ask our neighbor for help. Therefore the user requirements concentrate on the fact of making the user do everything from operating to maintenance of the IoT application without outside help in the fastest manner possible. I hope this book is beginning of research focusing on user requirements for IoT application as they are too many to be exhausted by just one book.