What is Internet of Things?

What is Internet of Things? A concept for a major industry of any choice, a scenario that could easyly exist in 5 years. The ecosystem would solve a problem or enhance the experience of your selected industry (or any aspect of it) through the Internet of Things.

two to three device ideas that can illustrate a concept and that interact with one another to support a learner, explain what their performance, how would they work with each other.