Antwort
we shouldn't ignore the daily security in our life such as the GPS tracking or other method used by someone to steal our privacy. Therefore a 3g blocker which can be got from http://www.jammerfromchina.com/categories/Mobile_Phone_Jammers/?o=25 with a good function of cutting off cell phone signals as well as other frequency bands signals can help to create the security system to protect us. And then we can enjoy the quiet and peaceful environment.