portable wi-fi jammer

Are you worried about that live under the surveillance? Do you want to keep a private space for yourself? This portable wi-fi jammer will help you to get away from the devices which are working by wifi or bluetooth signal. If you are interested in it, please feel free to contact us.
Recently I am intend to buy a jammer, how about the website: gps blocker ebay , are there someone who have already use it and provide me some advises?