IoT devices include thermostats, light bulbs, door locks, fridges, cars, implants for RFID and pacemakers (among an almost infinite list of possibilities). The concept behind the Internet of Things (IoT) is all these things working in concert for people in businesses, in industry, or at home. Here’s an example of the smart home enabled by IoT devices: The user arrives home and his car communicates with the garage to open the door. The thermostat is already adjusted to his preferred temperature, due to sensing his proximity.