Jammers may not be a good thing for a country

Every day, for nearly 10 minutes near the London Stock Exchange, someone is preventing,The signal of the GPS satellite network. The car navigation system stops working, and the timestamps of transactions conducted at financial institutions may be affected. However, these incidents are not cyber attacks by foreign powers. According to Charles Curry (Chronos Technology’s company) secretly monitoring such incidents, the most likely culprit is a delivery man who is hiding from his boss trying to find him.

The signal is weak. Mr. Curry compared them with the 20-watt bulbs seen at 19,300 kilometers. The portable jammer is not expensive: the driver can buy a dashboard model for £50 (about $78). They are becoming more and more threats. The electromagnetic noise bubbles they produce can interfere with legitimate GPS users. They will disrupt civil aviation and disrupt cell phone signals. In the United States, the sale and use of them is prohibited. In the UK, civilians are prohibited from deliberately (but not yet) used to purchase goods: the regulator Ofcom is considering implementing a ban. In recent years, Australian authorities have destroyed hundreds of GPS jammers.