<Ul> <Li> SD: reduction of used LF antennas in low - cost compact cars (results in a loss of detection quality) </Li> <Li> AD: using electric field antennas instead of magnetic field antennas (cost reduction) </Li> <Li> AD: using microwave frequencies (radar) instead of an LF and RF combination (more comfort) </Li> <Li> AD: Biometric authentication would identify the user and not the SmartKey transponder </Li> </Ul> <Li> SD: reduction of used LF antennas in low - cost compact cars (results in a loss of detection quality) </Li> <Li> AD: using electric field antennas instead of magnetic field antennas (cost reduction) </Li> <Li> AD: using microwave frequencies (radar) instead of an LF and RF combination (more comfort) </Li>

When did nissan start using push to start