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 receive a credential for the asset from a key device associated with a user using a first wireless connection. The access control system may be further adapted to store the credential in a cache of memory. The access control system may be further adapted to establish a second wireless connection with the key device. The access control system may be further adapted to request a validation of the credential from an authorization service in response to establishing the second wireless connection with the key device. The access control system may receive a validation token from the authorization service. The access control system may be further adapted to store the validation token in the cache.

A device connectable to a reader of an access control system includes an antenna, an ultra-wide band (UWB) front end circuit, a controller, and a communication link. The (UWB) front end circuit is connected to the antenna to facilitate UWB communication with a credential device. The controller is connected to the UWB front end and configured to perform ranging for the credential device using the UWB communication. The communication link is configured to interface with the reader.

Systems and methods for access control systems includes first and second access facilities, and first and second readers. The first reader is configured to control access through the first access facility, receive a credential using a first communication protocol from a device that stores the credential, and establish a secret with the device using the credential. The second reader is configured to control access through the second access facility. The first reader is configured to provide the secret to the second reader, and the second device is further configured to perform ranging using the secret and a second communication protocol different than the first communication protocol to identify intent information. Access through one of the first facility or the second facility is coordinated using the intent information.

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 receive a credential of a user from a key device associated with the user using a first wireless connection. The access control system may be further adapted to establish a second wireless connection with the key device. The access control system may be further adapted to determine the user intends to access the asset based on a data set generated derived from the second wireless connection. The access control system may be further adapted to use a trained machine learning model to determine the intent of the user to access the asset. The access control system may be further adapted to transmit a command to grant access to 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 calibrating a radio-based keyless access system of a transportation vehicle, an access system, and a corresponding transportation vehicle. Based on a measured field strength of an LF field, it is determined whether the signal transmitter is located at most at a specified distance from the transportation vehicle. A second transmission device emits a higher-frequency calibration signal in response to which the signal transmitter transmits a response signal back to the transportation vehicle. A reference distance from the signal transmitter to the transportation vehicle is automatically determined from the propagation time of the calibration signal and the response signal. The measured LF field strength-based determination of whether the signal transmitter is located at most at a specified distance from the transportation vehicle is then calibrated automatically based on the determined reference distance.

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.

An access control system receives an identifier of a mobile electronic device when it is located in a public area, from which a user can request access to an access-restricted area. A dataset is created, which is assigned to the user present in the public area, for the identifier and for storing a password in the first dataset such that the password is assigned to the identifier. A code processing unit acquires a password presented by the user when the user requests access to the access-restricted area. A processor unit determines if the identifier is assigned to a user profile in a database, authenticates the user as having access authorization in the event of such an assignment and determines if the acquired password matches the password stored in the dataset, wherein the user is recognized as an access-requesting user in the event of a match.

According to an embodiment, a first device includes: a first transceiver configured to transmit two or more first carrier signals using an output of a first reference signal source and to receive two or more second carrier signals; and a calculation unit, and a second device includes: a second transceiver configured to transmit the two or more second carrier signals using an output of a second reference signal source that operates independently of the first reference signal source and to receive the two or more first carrier signals. A frequency group of the two or more first carrier signals and a frequency group of the two or more second carrier signals are identical or substantially identical to each other, and the calculation unit calculates the distance between the first device and the second device based on a phase detection result obtained by receiving the first and second carrier signals.