Patent ID: 10532719

Abstract:
A Bluetooth Low-Energy (BLE) passive vehicle access control system integrated into a vehicle and an external device to defend the system against relay attacks is provided. The system includes at least one of a motion detector, a microprocessor, or a barometric pressure sensor. The motion detector is configured to detect and distinguish various types of motion and vibration. The motion detector is further configured to distinguish between a true motion event and a false motion event. The microprocessor comprises a set of computer executable instructions including a TX power profiling is capable of modulating the transmitted (TX) power level to create at a receiving end of a communication having link in the vehicle a RX power level (RSS) profile that serves as an authentication. The barometric pressure sensor is configured to measure barometric pressure which ultimately translates the measured barometric pressure into altitude value and distinguish the altitude value of the vehicle and of the external device is either matched or different.