很多新车都装备了与点火开关相配的键控代码，或是运用特殊的雷达信号来发动汽车的远程控制系统。
Many newer model cars come equipped with high-tech keys coded to match ignition switches or remote systems that use specific radio signals to start a car.
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二进制代码移频键控BCFSK ？
Binary Code Frequency Shift Keying?
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