Alamo Auto Insurance professional auto insurance company 2022? Individuals have the potential to lower their annual premiums if they install anti-theft devices. GEICO, for example, offers a “potential savings” of 25% if you have an anti-theft system in your car. Your insurance company should be able to tell you specifically which devices, when installed, can lower premiums. Car alarms and LoJacks are two types of devices you might want to inquire about. If your primary motivation for installing an anti-theft device is to lower your insurance premium, consider whether the cost of adding the device will result in a significant …