A location verification provision is implemented to determine the location of a device associated with a user at the time of an attempted transaction. The attempted transaction includes receiving user identification and/or payment information, which is associated with the device in an entry stored in a database. Location information of the device, as well as a time at each location, may also be stored in the database. To verify that the device is located at the location of the transaction, a comparison operation may be performed. If the device is located where the transaction is being processed, the transaction may be completed. Predetermined criteria may be defined to account for possible inaccuracies in location and time calculations.

An object tracking method and apparatus are provided. The object tracking method includes detecting a target object in a first-type input image that is based on light in a first wavelength band, tracking the target object in the first-type input image based on detection information of the target object, measuring a reliability of the first-type input image by comparing the first-type image to an image in a database, comparing the reliability of the first-type input image to a threshold, and tracking the target object in a second-type input image that is based on light in a second wavelength band.

An object tracking method and apparatus are provided. The object tracking method includes detecting a target object in a first-type input image that is based on light in a first wavelength band, tracking the target object in the first-type input image based on detection information of the target object, measuring a reliability of the first-type input image by comparing the first-type image to an image in a database, comparing the reliability of the first-type input image to a threshold, and tracking the target object in a second-type input image that is based on light in a second wavelength band.

In the field of mobile and user of the mobile location determination, geo-fences are used to identify areas and regions of commercial, safety and convenience to user of the mobile computer device. The methods disclosed reduce the central processor unit cycles of the mobile computer device and thus the power drain caused by high numbers of calculations required to determine the location of the mobile computer device relative to one or more complex shaped geo-fences by minimising the number of positioning calculations that the mobile device needs to perform. For location updates required by the mobile computer device, the method applies data structures to a deconstructed geo-fence prior to distance calculations for use by a geo-fencing application running on the mobile computer device.

In the field of mobile and user of the mobile location determination, geo-fences are used to identify areas and regions of commercial, safety and convenience to user of the mobile computer device. The methods disclosed reduce the central processor unit cycles of the mobile computer device and thus the power drain caused by high numbers of calculations required to determine the location of the mobile computer device relative to one or more complex shaped geo-fences by minimising the number of positioning calculations that the mobile device needs to perform. For location updates required by the mobile computer device, the method applies data structures to a deconstructed geo-fence prior to distance calculations for use by a geo-fencing application running on the mobile computer device.

The present disclosure provides an electronic system, an electronic device and a method for controlling the electronic device. The electronic system includes a first electronic device and at least one second electronic device, each second electronic device being associated with a target item. The first electronic device comprises: a first processing unit configured to determine an identifier of a second electronic device targeted by the first instruction input and generate a search signal specific to the second electronic device; and a first transmitting unit configured to transmit the generated search signal to the second electronic device. The second electronic device includes a second processing unit configured to determine whether the signal received from the first transmitting unit is a search signal specific to the second electronic device, and transmit a control signal to a prompting unit in response to determining that the signal received from the first transmitting unit is a search signal specific to the second electronic device; and the prompt unit configured to perform a prompt operation according to the control signal.

A self-moving device, including: a moving module, a task execution module, a control module. The control module is electrically connected to the moving module and the task execution module, controls the moving module to actuate the self-moving device to move, controls the task execution module to execute a working task. The self-moving device further includes a satellite navigation apparatus, electrically connected to the control module and configured to receive a satellite signal and output current location information of the self-moving device. The control module determines whether quality of location information output by the satellite navigation apparatus at a current location satisfies a preset condition, controls, if the quality does not satisfy the preset condition, the moving module to actuate the self-moving device to change a moving manner, to enable quality of location information output by the satellite navigation apparatus at a location after the movement to satisfy the preset condition.

A self-moving device, including: a moving module, a task execution module, a control module. The control module is electrically connected to the moving module and the task execution module, controls the moving module to actuate the self-moving device to move, controls the task execution module to execute a working task. The self-moving device further includes a satellite navigation apparatus, electrically connected to the control module and configured to receive a satellite signal and output current location information of the self-moving device. The control module determines whether quality of location information output by the satellite navigation apparatus at a current location satisfies a preset condition, controls, if the quality does not satisfy the preset condition, the moving module to actuate the self-moving device to change a moving manner, to enable quality of location information output by the satellite navigation apparatus at a location after the movement to satisfy the preset condition.

A method for locating an animal using radio waves. In radiolocation, a large number of possible calculation results for the location of the animal arise. Using the results of previous measurements and calculations with regard to the possible locations of the node to be located, stochastic calculations are used to filter out, from the plurality of the current location calculation results, that result which in fact applies with the highest probability. Acceleration values which are measured at the animal are used in the stochastic calculations. It is assumed that with increasing measured acceleration values the probability increases that there can also be relatively large distances between temporally successive locations of the node to be located.

A three-piece infrared single wavelength projection lens system includes, in order from an image side to an image source side: a first lens element with a positive refractive power; a second lens element with a refractive power; a third lens element with a positive refractive power; a stop disposed before an image source-side surface of the first lens element or between the image source-side surface of the first lens element and an image source-side surface of the second lens element; and the first lens element or the second lens element is made of glass. Such arrangements can provide a three-piece infrared single wavelength projection lens system with better image sensing function.