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== Application in RF remote control ==
A rolling code transmitter is useful in a security system for improving the security of [[radio frequency]] (RF) transmission, comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed and rolling codes with stored codes and seeing that they pass a set of algorithmic checks, a signal is generated to actuate an electric motor to open or close a movable component.{{citation-needed|date=November 2023}}
== Rolling code vs. fixed code RF remote control ==
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