This video simple introduction How to avoid being tracked via GPS.It shows how GSM/ GPS jammer http://www.jammer-shop.com/gsm-gps-jammers.html from Jammer-shop . jammer-shop is a specialized is engaged in the security field, signal shielding device research and development, production, sales and service as one of the high-tech enterprise. Those small devices are easily accessable nowadays so if fact everyone can use such spying tool to Protect Your Private Encounters. If you have any questions can be consulting us, we will provide the best service for you! Best wishes from www.jammer-shop.com