What are the functions of GPS jammers?

If you have a national license, Japan allows you to install interference devices in public places such as theaters and concert halls. Unless there is an emergency call, the French Minister of Industry has decided to interfere with cinemas, concert halls and theaters. Schools in China and India use car GPS Jammers to deter scammers. Mexico allows riots in churches and hospitals. The main client bank wants to prevent potential hamburgers from contacting employees and plans to use the Mexican government in prisons. Pakistan was allowed to block banks and libraries.

Most countries/regions, including the United States, use GPS jammers to restrict calls from bomb attacks on government officials. When President Obama took off on Pennsylvania Avenue after taking office, all cell phones in the area were blocked. The US military is using jamming devices to thwart Iraq’s street bombs. Of course, there are other uses for interfering devices.