From tagging a post with your location, to checking in to a restaurant, to simply finding out where you are, location-based services have become some of the most popular features of today’s Internet. One of the key ways technology companies are able to determine a location for these services is through a location database, which matches publicly broadcast information about local wireless networks with their approximate geographic location. By looking for wireless access points that are close to a user’s phone, location providers can return the approximate location you need. In addition, this method is a good alternative to other approaches, like GPS, because it’s faster, it works indoors, and it’s more battery-efficient.
Google introduced a method that lets you opt out of having your wireless access point included in the Google Location Server. To opt out, visit your access point’s settings and change the wireless network name (or SSID) so that it ends with “_nomap”. For example, if your SSID is “Network”, you‘d need to change it to “Network_nomap”.