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E-ZPass transponders work by passing radio frequencies to toll plazas, but they must be mounted to your car's windshield like this one

How Does E-ZPass Work and When Was It Invented?

The days of digging for coins in the cup holder to pay a road toll are over; that is if you have an E-ZPass transponder attached to your car. People who commute to work or frequently travel on toll roads know, E-ZPass is a real time saver. The technology behind the devices is widely used in many …