The Internet of Things (IoT) can be described as a loose network of physical devices that might be embedded with sensors, software, and connectivity. While a holistic view would see the IoT as being all the devices in the world with internet connectivity, it is often the case that these portable or remote devices are accessible within clusters or around hubs with specialist access and applications. Nevertheless, devices in the IoT can collect and exchange data with other devices or systems over the internet.
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Source: Phys.org