A passive keyless entry (PKE) system is disclosed. The PKE includes an in-vehicle apparatus. The in-vehicle apparatus includes a control unit that is configured to measure magnetic field and compute at least one angle between two projections of the magnetic field. When the measured angle is lower than a threshold value, an authorization signal is prevented.

A wireless communication system includes: an in-vehicle unit mounted on a vehicle and capable of wirelessly transmitting an access signal when an operation unit is operated; a portable device capable of wirelessly transmitting a vehicle-specific authentication code on a condition that the access signal is received; and a determination unit capable of determining whether or not the authentication code is a regular authentication code on a condition that the authentication code is received. Start of a driving source of the vehicle is permitted or running of the vehicle is enabled when the determination unit determines that the authentication code is the regular authentication code, and a security mode in which a function of transmitting the access signal by the in-vehicle unit or a function of transmitting the authentication code by the portable device is stopped can be set by a predetermined setting operation.

A vehicle includes a horn, a plurality of exterior lights, and at least one controller. The at least one controller is configured to grant vehicle system access to a nomadic device paired to the vehicle, and in response to receiving a message that contains data identifying a source of the message while the vehicle is in a key-off state from a nomadic device not paired to the vehicle, activate the horn and exterior lights according to respective patterns.

A terminal performs communication with an in-vehicle device to control a vehicle. The terminal includes a controller configured to switch and control an operation mode of the terminal to at least a predetermined first mode or a predetermined second mode, a reception unit configured to receive a first signal including a switching request of the operation mode from the in-vehicle device, a generation unit configured to update a predetermined value with the reception of the first signal and generate a second signal based on the updated predetermined value, and a transmission unit configured to transmit the second signal to the in-vehicle device. When a third signal including a command for instructing switching of the operation mode received by the reception unit is a response to the second signal, the controller switches the operation mode from the first to the second mode or from the second to the first mode.

A wireless authentication device for a saddle-type vehicle performs authentication through wireless communication with a mobile terminal carried by a user. The wireless authentication device for a saddle-type vehicle includes a first operating input device, a light-emitting and notification part, and a controller. The first operating input device receives an operation of switching to a state in which a power engine is capable of being started. The light-emitting and notification part is provided in the first operating input device or in a portion surrounding the first operating input device, and performs a light-emitting and notification operation in which light is emitted to notify a user that authentication has succeeded. The controller determines whether authentication has succeeded through wireless communication with a mobile terminal, and if the authentication has been determined to have succeeded, causes the light-emitting and notification part to perform the light-emitting and notification operation.

A secure vehicle access system comprises a vehicle and a key associated with the vehicle. The key comprises: a radio frequency, RF, key transceiver configured to: broadcast at least one signal; and listen for an acknowledgement message from the vehicle. The vehicle comprises: a radio frequency, RF, vehicle transceiver configured to: listen for the at least one broadcast signal from the key; and in response thereto, transmit an acknowledgement message back to the key to establish a communication link between the vehicle and the key. The key further comprises a ranging circuit configured to perform a distance determination between the vehicle and the key, following the establishment of the communication link, to determine whether to allow access to the vehicle.

One general aspect includes a method to temporarily deactivate one or more electronics devices installed in a vehicle, the method including: (a) receiving, at a controller, a vehicle access request; (b) in response to the vehicle access request, generating, via the controller, a vehicle access command configured to unlock one or more vehicle doors; (c) in response to the vehicle access request, generating, via the controller, an electronics deactivation command configured to at least temporarily deactivate one or more vehicle electronic devices; and (d) sending the vehicle access command and electronics deactivation command to a remotely located vehicle. Other embodiments of this aspect include corresponding computer systems, apparatus, and computer programs recorded on one or more computer storage devices, each configured to perform the actions of the methods.

A computing device can be programmed to, upon determining that a location of a vehicle is within a set of boundaries associated with a wireless network and that a user device is authenticated to the network, authorize the user device to control the vehicle. The computing device can be further programmed to, upon determining that the vehicle is not within the boundaries, authorize the user device to control the vehicle based on transmitting an authentication credential to a server and receiving an authorization certificate.

A radio key for an access system of a motor vehicle includes a receiver circuit with at least three LF receiver coils for reception of a low frequency signal. The receiver coils are oriented in different spatial directions. A central control circuit includes a microcontroller coupled to the receiver circuit. The control circuit with the microcontroller can assume an energy-reduced resting state and an active operating state. The receiver circuit is configured to awaken the control circuit from the resting state when a signal is received by the LF receiver coils. The central control circuit is configured to activate each of the LF receiver coils separately and to query a received signal strength. The central control circuit then selects the LF receiver coil with the highest signal strength for a subsequent signal reception.

A method for authorizing the use of a motor vehicle having a first and second antenna spatially remote from one another, includes emitting, from the first vehicle antenna, a first signal that is received by an identification transmitter antenna of a portable identification transmitter. The method also includes establishing at least one spatial component of a first electromagnetic field of the received first signal using an angle-resolving magnetic field sensor, emitting, by the second vehicle antenna, a second signal that is received by the portable identification transmitter antenna, and establishing at least one spatial component of the second electromagnetic field of the received second signal using the angle-resolving magnetic field sensor. The method also includes establishing an angle at least between the established at least one spatial component of the first electromagnetic field and the established at least one spatial component of the second electromagnetic field, and providing a first authorization signal for authorizing the use of the motor vehicle when the established angle exceeds a predetermined threshold value.