Cell Phone GPS Jammer is a small, powerful and easy-to-use gadget that blocks cell phone signals and blocks GPS satellite positioning. It can be kept in a room or locker for privacy and confidentiality. Actual interference distance will depend on signal strength and location of use. A fully charged battery can interfere with up to four square kilometers of spectrum.

Here are some great tips to consider before buying a jammer:

First, consider its legality. Some countries make it…