How to prevent being tracked by someone installing a locator?

Hello, I found that I was being followed after get off work recently, but I have no evidence. He seems to have installed a tracker on my car. How can I prevent tracking?

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Topsignaljammer  2022.

To get rid of this annoying tracking, you can use a GPS jammer, which can protect you from location tracking in schools and other places. According to the characteristics of all current GPS satellite positioning systems and wireless candid photography, the GPS satellite signals and wireless candid photography transmission signals are effectively truncated within the radius of 1-15 meters of the GPS jammer, thereby forming an effective protection area, allowing you to The whereabouts are not worried about being tracked and photographed secretly.