IoT or Internet of Things is a real hype nowadays. Everybody is talking about it and everybody is doing it. Especially companies producing various electronic devices like light bulbs, electric switches, thermometers, scales, CCTV and such. Everything can be smart – even your toilet. All you need to do is to measure something or replace the manual switch with electronic one and connect it to Bluetooth, Zigbee, ZWave or even WiFi and you have a smart device that people will pay a hefty price for. But there are some issues (apart from the obvious one that not all those devices make sense).