2. So what do these devices have to do with EMF protection in the 21st century?

These devices have to communicate with the internet somehow, and the method of communication just happens to be through electromagnetic frequency known as radiofrequency.
Electromagnetic frequency is a radiation that is emitted when electronic devices are used. Therefore, when you use one of these electronic devices, you are exposed to a level of radiation.
To protect yourself from EMF radiation within the home in today’s modern world, you first need to know what EMF radiation is and why it can be potentially dangerous. So before we dive into EMF protection, let’s first cover some basics.