At some point in the near future, nearly every object in the home or office will connect to the internet. Connecting everything is an exciting idea, but there are concerns about the impact of radio waves on human health. Some are concerned with 5G operating on a different and higher frequency than previous cellular signals, while others are concerned even with the non-ionizing radiation emitted by electronic devices such as cell phones, microwaves and power lines
Despite concerns with the widespread integration of radiation-emitting devices in our lives, ubiquitous IoT networks are coming. Since there are still significant concerns, it is essential to know that health-conscious IoT networks do exist. One alternative that is already operating in IoT networks around the world is Bluetooth Mesh.
Bluetooth Mesh is a distributed network that is made for use in IoT networks, and is well-suited for health-conscious users. Bluetooth operates on the 2.4 GHz frequency band, while 5G operates on bands below 6 GHz and above 24.25 GHz. While cell signals can pass through concrete walls and humans easily, Bluetooth Mesh waves cannot, therefore alleviating the risk of atomic decay in humans. In a set of experiments conducted in our office, we found that we could completely block Bluetooth signals by covering a device with our hands, showing that the signal could not pass through a human hand (results shown in images below), validating Bluetooth’s stance of non-penetrative and weaker waves.