Who does not want that his router is included in the database of wi-fi routers of Google’s “_nomap” to add to its ssid. The router of the person who does not comes by default in the database which Google uses for determining the location.
The opt-out option with the code in the ssid is the only way to not to be included in the database, says Google. The ‘_nomap’-variant can be the approval comes from the Dutch board for the protection of personal data, proved to be more of a decision of the privacy watch dog.
The opt-out works for Dutch users, because the previous database of wi-fi access points must be destroyed. Therefore, Google needs to be the database rebuilding process. Google collects data from wi-fi networks such as ssids, mac addresses and locations of routers, insomuch that in his services, the location can be determined. Under more Google Maps on the desktop and many Android apps make use of the wi-fi database of Google.
Google hopes that by adding _nomap also by other collectors of wi-fi access points, such as Microsoft, will be used as a way to opt-out indicate. How inexperienced users, who often do not know how the ssid of their wireless network need to change, to be helped with this opt-out option, is unknown. Adding _nomap at the end of the ssid.
With its Street View cars collected the search giant from 2008 to 2010 the wi-fi data from many Dutch households and companies. According to the Dutch dpa is that data in many cases traceable to individuals, so that Google illegally personal data has been collected.