KEYLESS ENTRY SYSTEM AND CONTROL METHOD THEREOF

摘要

A keyless entry system comprises a resonant unit, a control unit and a portable device. The resonant unit is disposed to at least one door and generates a sensing signal when sensing a user approaching or touching the door. The control unit receives the sensing signal and controls the resonant unit to transmit a first authentication signal. The portable device receives the first authentication signal and transmits a second authentication signal according to the first authentication signal. The control unit receives the second authentication signal and controls the door according to the second authentication signal.