A first computing device calculates a current attitude of a first oscillating body at a first position from a first vector from the first position to a second position and a second vector from the first position to a third position. The first computing device modifies a first reference vector from the first positioning antenna to a first predetermined point in the attitude of the first oscillating body, according to the current attitude. The first computing device calculates the position of the first predetermined point in the current attitude of the first oscillating body by adding the modified first predetermined point vector to the first position. The first computing device acquires the position of the second predetermined point in the current attitude of the second oscillating body calculated from three positions. Then, the first computing device calculates the current positional relationship between the first and second predetermined points.

A method for locating a user equipment with respect to a motor vehicle, including the following steps, carried out iteratively when the user is in motion: determining what is referred to as the inter-object distance between an ultra-wideband communication module of the vehicle and the user equipment; computing what is referred to as the inter-step distance covered by the user between two consecutive steps based on the measured acceleration and orientation values; and cross-referencing the determined inter-object distance and the computed inter-step distance in order to determine at least one probable location zone of the user equipment. The iterations ending when a single probable location zone of the user equipment with a surface area smaller than a predefined surface area has been determined. The single probable location zone then corresponding to the location of the user equipment around the vehicle.

A distance data between the portable device and the vehicle-side transmission and reception device is acquired. A movement speed of the portable device is calculated based on a change between a current distance data and a previous distance data. A position estimation distance for estimating the position of the portable device with respect to the vehicle is updated when the movement speed is less than a first speed. The position estimation distance is not updated when the movement speed is equal to or larger than the first speed. The position of the portable device is estimated according to the position estimation distance.

The various systems and methods disclosed herein provide for a secure, cost effective, and high accuracy location detection. In some implementations of the system and method for high accuracy location detection, a mobile location device obtains and calculates location data from a plurality of sources without requiring expensive and power inefficient processors. In some implementations, such secure, cost effective, and high accuracy location detection by the mobile location device is used in improved vehicle based transactions, such as energy dispensing and payment management systems and methods. In some such implementations, the mobile location device communicates with remote geomapping servers and payment systems to provide automated vehicle based transactions, such as energy dispensing sessions and payment.

A method, system, and computer-readable medium for synchronizing policy data on a device based on device usage context. By synchronizing policy data on the device based on device usage context, security, bandwidth and energy efficiency concerns associated with the current data synchronization art by intelligently organizing and prioritizing the updating of policy data in compliance with policy data.

Biometric monitoring devices, including various technologies that may be implemented in such devices, are discussed herein. Additionally, techniques, systems, and apparatuses are discussed herein for providing power-conserving techniques and systems for efficiently utilizing a GPS receiver are described. The positional fix frequency of the GPS receiver may, according to some implementations, be modified or adjusted between various levels according to data from one or more non-GPS sensors. Such non-GPS sensors may include, for example, ambient light intensity or spectrum sensors, accelerometers, gyroscopes, magnetometers, heart rate sensors, galvanic skin response sensors, infrared sensors, etc.

Systems, apparatuses, and methods are provided herein for updating directions to a container. In one embodiment an apparatus for updating directions to a container comprises a container housing, a movement sensor attached to the container housing, a wireless transceiver; and a control circuit coupled to the movement sensor and the wireless transceiver. The control circuit being configured to: detect a relocation of the container housing via the movement sensor, determine an estimated new location of the container, and send, via the wireless transceiver, the estimated new location to a computing device to initiate an update of a direction to the container.

A method is described of using the mobile device so as to control the drain of power from the power source of the mobile device, the mobile device having at least two location determination techniques having respective power drain characteristics, the method includes selecting the location determination technique having a lower power drain characteristic the greater the determined distance of the mobile device from a predetermined location or area, and selecting the location determination technique having the greater power drain characteristic the smaller the determined distance of the mobile device from a predetermined location or area. The method thus uses the least accurate technique when furthest away and the most accurate technique when closer to a predetermined location or area.

A method performed in connection with a handheld communication device for monitoring a context in a battery efficient manner and for detecting a vehicular context, the handheld communication device comprising a GPS hardware component, a network-based position estimation component and a data processor, the method comprising: acquiring a sequence of location data readings using the network-based position estimation component; identifying a non-vehicular context based on changes in the acquired sequence of the location data readings; when the non-vehicular context is not identified, powering on the GPS hardware component and acquiring speed data using the GPS hardware component, determining whether the acquired speed is within predetermined vehicular speed ranges and identifying either a vehicular context or the non-vehicular context; when the vehicular context is not identified, powering off the GPS hardware component to save battery power.

Systems and methods are disclosed for estimating speed and/or velocity for a portable device using an optical sensor. The optical sensor may capture a plurality of samples to be processed to estimate speed. The speed or velocity may be estimated based on a determined context and/or usage of the portable device. The estimated speed or velocity may be used to supplement other navigational solutions or may be used independently.