Earlier this year, in an unprecedented move, France has passed a law entirely banning WiFi in nurseries and daycare settings.  The law goes on to restrict use of WiFi in primary schools to when it is actively being used for education.  This represents the first national implementation of the precautionary principle, in this case relating to the management of the prevalence of wireless technology.

France is taking a proactive approach to mitigating potential harm from radio frequency EMFs.  As usual, the UK is lagging behind in taking these issues seriously instead leaving the precautionary principle to individual responsibility.  At the very least it is advisable to turn the WiFi off at night, and preferably any time when not in use.  An alternative approach is to use a cabled system which allows access around the house via the electrical circuit through use of a dLAN (direct local area network).  These are readily available via mainstream internet outlets and have the added advantage of boosting security of data, as wireless signals are known to be much easier to hack into.  For more information take a look at this link.

If you decide to go for this option remember to ensure that the wireless signal is disabled from your modem and computer, usually needing to be done within the setting options.