Abstract: An authorization controller on a first side of a two-sided system communicates with an accelerometer on the second side for tracking the second side by inertial navigation. The authorization controller activates a radar transmitter and receiver installed on a car to include a plurality of spaced apart transmitting and receiving radar antennas to track the second side by radar. Coherent pulse or Doppler radar waveform tracks motion of an approaching user carrying a tag on the second side that is paired with the car on the first side. The authorization controller uses the radar to look for a pre-programmed pattern of user movement such as a “step in, wait, step out” pattern. Recognition of the programmed pattern activates an associated action from the authorization controller, such as opening or closing a tailgate or side door of the car.

Abstract: An authorization controller on a first side of a two-sided system communicates with an accelerometer on the second side for tracking the second side by inertial navigation. The authorization controller activates a radar transmitter and receiver installed on a car to include a plurality of spaced apart transmitting and receiving radar antennas to track the second side by radar. Coherent pulse or Doppler radar waveform tracks motion of an approaching user carrying a tag on the second side that is paired with the car on the first side. The authorization controller uses the radar to look for a pre-programmed pattern of user movement such as a “step in, wait, step out” pattern. Recognition of the programmed pattern activates an associated action from the authorization controller, such as opening or closing a tailgate or side door of the car.

Abstract: Systems and methods to provide secure access for authenticated and authorized users to vehicle compartments. In one embodiment, user access to a secure vehicle compartment is determined using a sensor measurement of the user, the sensor measurement corresponding to a particular authenticated user with particular user authorization settings as stored in a user profile database.

Abstract: A hands-free opener for a power liftgate provides a proximity sensor that fits into an operating position behind the vehicle license plate or in the license plate area. A driven shield located behind the sensor shapes the electric field from the sensor to achieve directional detection extending outward from the front side of the sensor. A proximate ground plane at a preselected spacing from the back side of the ground plane reduces interference.

Abstract: A hands-free opener for a power liftgate provides a proximity sensor that fits into an operating position behind the vehicle license plate or in the license plate area. A driven shield located behind the sensor shapes the electric field from the sensor to achieve directional detection extending outward from the front side of the sensor. A proximate ground plane at a preselected spacing from the back side of the ground plane reduces interference.