Now days the people always in insecurity status,when you at home,office or even in car,your cell phone,GPS device may leak your position, the more serious is that your conversation will be monitored by someone else,even your cell phone was powered off, maybe somebody is surveillance by wireless spy camera when you hold a important meeting.
what to do with these problem?the best way to avoid those problem is put a Jammer to disturb the GSM 3G GPS Wireless signal to keep you in security, the GPS jammer is works to jammer GPS signal,do not work for GSM and wireless signal,the GSM jammer is works only for GSM network signal,do not work for 3G, the 3G jammer is works for CDMA and system,have good performance with 3G and GSM signal together, if you need to jammer wireless signal,then you need choose wireless signal jammer to jammer 900mhz to 2400 mhz wireless signal.