System, methods, and other embodiments described herein relate to securing wireless communications for passive keyless entry (PKE) to an asset. In one embodiment, a method includes monitoring operating conditions associated with the asset. The operating conditions identify security characteristics of the asset and interactions of wireless devices with the asset. The method includes selectively activating at least one countermeasure from an available group of countermeasures according to at least the operating conditions. The method includes wirelessly communicating, by the asset with an accessing device, according to the at least one countermeasure.

Systems and techniques for a physical access control systems with localization-based intent detection are described herein. In an example, an access control system may regulate access to an asset. The access control system is adapted to establish a first connection with a key-device. The access control system may be further adapted to receive a credential for a user over the first connection. The access control system may be further adapted to establish a second connection with the key-device. The access control system may be further adapted to determine an intent of the user to access the asset. The access control system may use location data derived from the second connection to determine the intent of the user. The access control system may be further adapted to provide the credential to an access controller, based on identifying an intent of the user to access the asset.

The application relates to methods and a driver for communication with a transponder,

in particular a driver for installation in a motor vehicle and for communication with a mobile transponder for a vehicle access and/or start system of a motor vehicle, wherein the driver is designed so that, after a first transmission at a first transmission frequency and after driver-side reception of a response of a transponder at the transponder resonance frequency thereof, and after driver-side determination of the response frequency of the response using a frequency detection apparatus,
said response frequency is set, in particular by changing transmission pauses, at the driver as the second transmission frequency, corresponding to the measured transponder resonance frequency, at which the driver is then intended to transmit, wherein the driver has a resonant circuit (2, 3, 4), which has a higher driver resonant frequency than the mentioned first transmission frequency and than the mentioned second transmission frequency of the driver.

A method for measuring a distance separating a vehicle and an identifier is disclosed. The method includes transmitting, from the vehicle to the identifier, a first train of first sinusoidal signals, receiving, by the identifier, an image train of second sinusoidal signals corresponding to the first sinusoidal signals, generating, by the identifier, measurements of phases and amplitudes of the second sinusoidal signals that are altered from the first sinusoidal signals by transmission from the vehicle to the identifier, constructing a frequency spectrum based on the measurements and a second image train received by the vehicle from the identifier, where the frequency spectrum is constructed by detecting spectral lines of the first image train and the second image train, performing an inverse Fourier transform of the frequency spectrum to obtain a temporal signature, and calculating the distance on the basis of an intermediate time associated with a maximum of the temporal signature.

The invention relates to a method for estimating a distance (d) between a vehicle (10) fitted with a first wireless communication module (12) and an identifier (20) fitted with a second wireless communication module (22), including the following steps: generating a randomly ordered list; receiving, by at least one of the first and second wireless communication modules (12, 22), electromagnetic signals having a frequency that changes consecutively from among a plurality of frequencies in accordance with said list; for each frequency in the plurality of frequencies, measuring a reception phase of the electromagnetic signal having the relevant frequency; estimating said distance (d) on the basis of the measured phases. An electronic unit (11) for a vehicle (10) is also described.

An infrastructure-controller for an infrastructure. The infrastructure-controller configured to: send a ranging-scheduling-signal to a key, wherein the ranging-scheduling-signal comprises timing-information for a subsequent ranging operation; and activate one or more ranging nodes associated with the infrastructure, for receiving a key-ranging-signal from the key, at an infrastructure-node-start-ranging-time based on the timing-information. The ranging-scheduling-signal has a frequency in a first RF frequency range. The key-ranging-signal has a frequency in a second RF frequency range.

A method and a system for smart Bluetooth operation switching based on a beacon broadcast are provided. A Bluetooth device transmits the beacon broadcast; a mobile terminal scans the beacon broadcast and, by parsing the beacon broadcast, the mobile terminal determines whether to wake up an application program; sending a parsed beacon broadcast to the application program, and identifying feature data of a Bluetooth device connectable broadcast set in the beacon broadcast; the Bluetooth device transmits a connectable broadcast; the mobile terminal connects to the connectable broadcast and performs an identity verification; acquiring a received signal strength indicator (RSSI) signal strength between the Bluetooth device and the mobile terminal, and mutually calculating position information to obtain a relative distance of the Bluetooth device and the mobile terminal; and, when the relative distance reaches a threshold, executing a corresponding switch action.

A wireless control method, used for a first device and a second device, includes the second device establishing a wireless communication connection with the first device via a plurality of channels, the first device determining whether the plurality of channels conform to a plurality of predefined channels, and the first device executing a function when the plurality of channels conform to the plurality of predefined channels.

In one aspect, a universal receiver is provided for being operably coupled to a movable barrier operator. The universal receiver includes at least one radio antenna adapted to receive signals transmitted at different frequencies and a controller operably coupled to the at least one radio antenna. The controller is adapted to determine a code of a signal received by the at least one radio antenna at any one of the different frequencies. The controller being further adapted to learn the code in response to a user-independent learning condition being met.

A system for includes master and sniffer devices. The master device includes: first antennas with different polarized axes; a transmitter transmitting a challenge signal via the first antennas from the vehicle to a slave device, where the slave device is a portable access device; and a receiver receiving a response signal in response to the challenge signal from the slave device. The sniffer device includes: second antennas with different polarized axes; and a receiver receiving, via the second antennas, the challenge signal from the transmitter and the response signal from the slave device. The sniffer device measures when the challenge signal and the response signal arrive at the sniffer device to provide arrival times. The master or sniffer device estimates at least one of a distance from the vehicle to the slave device or a location of the slave device relative to the vehicle based on the arrival times.