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WiFi

 

What is WiFi?

WiFi is a way to connect a computer or other device to a computer network using low power radio signals.  It may be used to replace cable connections in the home, school or office, or to provide mobile internet access through so-called “wireless hot spots” in cities, at airports and in other locations.

Is exposure to WiFi signals harmful?

No.  Measurements in New Zealand and overseas show that exposures are tiny fractions of the public exposure limit in the New Zealand radiofrequency field exposure Standard.  Exposures are low for three main reasons:

• The low power of the transmitter
• The rapid decrease in signal strength with increasing distance from the transmitter
• The fact that no signal is transmitted when no data is being transferred (except for brief “beacon signals”).

Do I need to take any precautions when using WiFi?

The health research does not suggest that any special precautions are needed when you are in an area where WiFi equipment is being used.   If you do wish to reduce your exposures, there are simple steps you can take:

• Place the wireless access point up on a high shelf or away from where people might sit and work.
• When working with a WiFi-enabled laptop, place it on a table rather than directly on the lap.

Where can I get more information?

Information on this site

For more information about	Try these links
Safety of radiofrequency fields	Recent reports by health bodies around the world.
Safety of WiFi in New Zealand schools	Letter from the Ministry of Health to the Ministry of Education

External links

For more information about	Try these links
WiFi and health	WHO Fact Sheet on Base Stations and Wireless Technologies
The New Zealand radiofrequency field exposure Standard NZS 2772.1:1999	The Standard can be purchased from Standards New Zealand. The Standard is based on Guidelines published in 1998 by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) and reaffirmed in 2009.
Information and research from the UK Health Protection Agency	Health Protection Agency website

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