In this chapter, we learned how to add text messaging to our doorbell application. This creates a doorbell fit for the age of the Internet of Things. It's easy to see how the concept of the IoT Bluetooth doorbell could be expanded—imagine turning on the porch lights when someone pushes the doorbell.
We can also see how the Blue Dot app could be utilized in other ways as well. We could program a certain swiping sequence with our Blue Dot app, perhaps to unlock the door. Imagine not having to carry around keys!
This is the last chapter before we introduce our robot car. In the following chapters, we will take the concepts we have learned so far and apply them to a robot that we control through the internet.
