We now have a fair idea about the most important areas related to the Internet of Things.
One thing that all IoT devices have in common is their connectivity—equipped with an internet connection, they can send and receive information, sense their surroundings, collect data, and control physical actuators. To be available over the internet, these devices need to have unique identifiers, usually in the form of their IP addresses.
You learned that IoT is being used in smart homes in the form of connected devices (for example, smart fridges and smart heating systems). This area has the most possibilities for your own experiments using an Arduino, sensors, and actuators.
We also had a look at two other areas where IoT is being used that gain a lot of traction: smart cars and industrial IoT. Smart cars will take over our streets and (at least partly) replace regular cars...
