Abstract: Remote devices have replaced keys as a means to access a secure feature of a vehicle. Remote door locks, starters, climate control, trunk openers, etc., have allowed vehicles to be more welcoming and easier to use. However, such functions often rely on radio frequency transmissions that can merely relay signals coming from an authorized device that may allow a nefarious user to access the vehicle or contents therein. By encoding sequence numbers and timestamps within an exchange, a vehicle may determine that an authorized user is too far away to be granted access to the secure feature, thereby denying access to the nefarious user implementing a relay attack on the vehicle.

Abstract: Remote devices have replaced keys as a means to access a secure feature of a vehicle. Remote door locks, starters, climate control, trunk openers, etc., have allowed vehicles to be more welcoming and easier to use. However, such functions often rely on radio frequency transmissions that can merely relay signals coming from an authorized device that may allow a nefarious user to access the vehicle or contents therein. By encoding sequence numbers and timestamps within an exchange, a vehicle may determine that an authorized user is too far away to be granted access to the secure feature, thereby denying access to the nefarious user implementing a relay attack on the vehicle.

Abstract: A vehicle is provided that includes a safety system that can provide an alert, external to the vehicle, that can warn other vehicles, people, etc. that a driver and/or passenger(s) are exiting the vehicle. Methods and systems determine when an occupant of a vehicle is about to exit by sensing the exit movement or an exit sequence, which may be detected by internal vehicle sensors. In response to the exit sequence, the vehicle may control one or more alert features, associated with the vehicle, to provide an external alert to other vehicles and/or users outside of the vehicle that a driver and/or passenger(s) is/are about to exit.

Abstract: A vehicle is provided that includes a safety system that can provide an alert, external to the vehicle, that can warn other vehicles, people, etc. that a driver and/or passenger(s) are exiting the vehicle. Methods and systems determine when an occupant of a vehicle is about to exit by sensing the exit movement or an exit sequence, which may be detected by internal vehicle sensors. In response to the exit sequence, the vehicle may control one or more alert features, associated with the vehicle, to provide an external alert to other vehicles and/or users outside of the vehicle that a driver and/or passenger(s) is/are about to exit.