https://medium.com/@arindey/internet-of-things-iot-security-privacy-applications-trends-3708953c6200

If you want to understand Internet of Things (IoT), let’s have a look at the term “thing.” Any physical device can be a “thing” (in terms of IoT). For example, it could be smartphones, washing machines, televisions, wearable devices, lamps, headphones, vehicles, buildings and anything possible that can be thought of. In the near future, it’ll be true that “anything that can be connected will be connected.”

Once we know what a “thing” is, let’s examine the “Internet” part.