What I am exposed to from WiFi?

WiFi uses low power radio signals to connect a laptop, tablet computer, smartphone or other device to a computer network.  This may be in a home or office, or though so-called “wireless hot-spots” in cafes, airports and other locations.  There are several factors about the technology which result in very low exposures:
  • The transmitters operate at very low power.
  • The exposure decreases quickly as you get further away from the transmitter (eg the “hot-spot”, or the laptop).
  • There are no emissions when no data is being transmitted (apart from very brief “beacon” signals).
Is it safe to have WiFi in school classrooms?

Tests in New Zealand and many other countries have shown that exposures from WiFi access points and laptops in classrooms during lessons  are brief, and tiny fractions of the permitted exposure limits.  On this basis, schools would be best advised to concentrate on other areas for promoting health and safety.

How can I reduce my exposures to WiFi signals?

Although the health research and low exposures suggest that there is no need to reduce exposures to WiFi signals, it is simple to do so if you wish:
  • Put your access point or wireless router on a high shelf or other out-of-the-way place.
  • If using a WiFi-enabled laptop, tablet or other device put it on a table rather than in your lap.
Other areas of this site with relevant information are: