KOLLA VART ALLA ÄR! :D

Spana in länken :)
Den tar reda på var en telefon, och därmed troligen telefonens ägare, befinner sig genom att se vilken GSM-cell telefonen har bäst kontakt med. Noggrannheten kan bli så bra som ner till 10m beroende på täckningen där telefonen är.
Skriv in landsnummer och mobilnummer för personen du söker.

Identification by triangulation:Mobile phone tracking technology relies on the use of triangulation - taking the signal strengths registered from your mobile phone at a minimum of three nearby GSM receiver masts.
As the mobile phone companies know the position of each mast, and can tell the signal strength of your phone at each of these nearby masts, they can use this to calcuate your position to a certain degree of accuracy (within about 50 to 100 meters).

• 
  Approximative error range:
  10 meters (max.) For europe cellular and United Europe.
  25 meters (max.) For North America Territory.
  50 meters (max.) For the rest of the World.

Check the link :)
http://www.geomobiles.net/en/index.html