The invention relates to a device for controlling access to a machine, comprising a portable object having a signal transmission member and a device for locking and unlocking a machine. The member for controlling the device is capable of triggering, once the second transceiver of the device has received the signal, the transmission of a signal to a wireless radio receiver supported by the portable object, and comprises a control member for triggering, when the wireless radio receiver has received the second signal, the transmission of a signal, the control member being connected to a calculator member for computing a distance between the portable object and the device using the signals, the portable object comprising a member for independently powering the transmission member, the receiver and the control member thereof. The device comprises a further calculator member for computing an incoming angle of the first signal and/or the third signal such as to trigger, when the angle is within a given angular range and when the distance is lower than a predetermined value, the unlocking of the machine and to trigger, when the distance is higher than a predetermined value, the locking of the machine.

The invention concerns a vehicle tracking network including a plurality of subscriber vehicles and a control-center; and systems and methods for tracking vehicles, which are subscribers to such vehicle tracking network. In certain implementations, the method for tracking a subscriber vehicle includes the following operations carried out at the subscriber vehicle: monitoring operation of one or more services related to at least one of a wireless network communication service and positioning service associated with the subscriber vehicle; upon detecting a failure in at least one of said services, generating a corresponding distress signal encoded to be identifiable by other subscriber vehicle(s) of the vehicle tracking network; and broadcasting the encoded distress signal such that it is detectable by one or more of the other subscriber vehicles of the vehicle tracking network, which are located in the vicinity of the subscriber vehicle broadcasting the distress signal. Another subscriber vehicle(s), which receive the distress signal, may thereby initiate automatic notification of the condition of the vehicle broadcasting the distress signal to the control center.

An apparatus for mobile device localization is provided with a primary device. The primary device is configured to transmit a first signal at a first transmission power level to a secondary device and to receive a response signal that is indicative of a quality indicator of the first signal as received by the secondary device. The primary device is further configured to determine a second transmission power level based on the quality indicator; transmit a second signal at the second transmission power level to the secondary device; and to determine a distance between the primary device and the secondary device based on a filtered transmission power level value.

An intelligent transport system includes an access point which puts a plurality of channels under control and casts various information and a vehicle-mounted device which directly communicates with the access point or is mounted on a vehicle which performs multi-hop communication, the access point includes broadcast means which broadcast a content of the information to be casted to a plurality of channels as service information, and the vehicle-mounted device includes channel switching means which perform a channel switching so that a desired service can be received on the basis of the service information.

Technologies for directional wayfinding include a mobile computing device having one or more local location sensors to generate data indicative of movement of the mobile computing device. The mobile computing device captures first sensor data indicative of movement of the mobile computing device along a path and determines a series of waypoints based on the first sensor data. The waypoints may describe movement data of the mobile computing device, including length and direction of movement. The mobile computing device determines a series of directional instructions to guide a user of the mobile computing device back along the path in the reverse order and presents the directional instructions to the user. The mobile computing device may monitor the sensor data to determine whether the user has arrived at each waypoint while reversing the path. The sensors may include an accelerometer, gyroscope, magnetometer, or altimeter. Other embodiments are described and claimed.

An electrical infrastructure system and method of use of the system for a vehicle. There are several electronic control units (ECU) for one or several functional units (30n) for the vehicle. The ECUs are connected through a network (32). The infrastructure system is configured to implement a state map including various operational states Sn that the vehicle can adopt. These operational states are connected by one or several transitions Tn, where the transition from one operational state to another depends on predetermined transition conditions being satisfied. The infrastructure system is configured to receive one or several input signals (34) to at least one ECU, comprising parameter values that represent events. The at least one ECU is configured to analyze the input signals with the aid of the transition conditions, to determine an operational state, and to make the operational state that has been determined available on the network (32).

Method, mobile device, computer program product, and apparatus for optimizing sensor reporting are described. A mobile device can measure radio frequency (RF) signal characteristics while receiving data from one or more mobile device sensors. The mobile device may determine its relative displacement between RF signal measurements. The mobile device can send a representation of the RF signal characteristics and the displacement data to one or more servers. The representation displacement data may include one or more reliability characteristics and/or a displacement reliability rating. A server can obtain the displacement data and RF signal characteristics to determine positioning of wireless transmitters in an environment and build a positioning database.

Venue information is stored, the venue information including a first location portion of the venue and a second location portion of the venue. An actual presence of a location sensing mobile device is identified within the venue, the actual presence identified based on beacon signals received from a beacon associated with the first location portion of the venue. A first drone associated with the first location portion of the venue is selected based on the actual presence. First sensor data is received from the first drone. A virtual presence of the location sensing mobile device is received, the virtual presence being different from the actual presence. A second drone associated with the second location portion of the venue is selected based on the virtual presence. Second sensor data is received from the second drone. The first and second sensor data is transmitted to the location sensing mobile device.

Systems and techniques are described that can be used to determine a number of levels of a multilevel building crossed by a mobile device, that is carried by a user during an elevator trip, based on characteristics of a periodic magnetometer signal. The periodic magnetometer signal is formed, by a magnetometer of the mobile device, in response to the magnetometer traversing a portion of an iron-based periodic structure corresponding to the number of levels of the multilevel building during the elevator trip.

A pseudonymous proximity location device and methods of operating and/or interacting with the same are provided. The pseudonymous proximity location device is configured to provide meaningful information to authorized reading devices but useless information to non-authorized reading devices, thereby prohibiting the use of the pseudonymous proximity location device by unauthorized reading devices.