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.

A light source arrangement is provided. The light source arrangement may include a plurality of semiconductor laser light sources arranged in such a way that the laser light emitted by the semiconductor laser light sources is aligned in parallel, and a deflection unit configured to collect and influence all beam paths of the laser light emitted by the semiconductor laser light sources so as to form a beam. The deflection unit has a first mirror element with a concavely curved surface, which is embodied to capture and reflect the laser light emitted by the semiconductor laser light sources by the surface. The light source arrangement may further include a second mirror element with a convexly curved surface, which is embodied to capture and focus the laser light reflected by the first mirror element.

A method alerts a user of a first device to the presence of a second device which can interact with the first device. The method includes using an ultrasonic signal transmitted by one of the devices to determine whether the first device is within a threshold distance of the second device. If the first device is determined to be within the threshold distance of the second device, a notification is triggered on the first device.

An electronic device apparatus and method are disclosed herein. The apparatus includes a processor. The processor may execute the method, which includes detecting a first location and a movement velocity of the electronic device, estimating a second location of the electronic device based on the detected movement velocity of the electronic device, comparing the first location of the electronic device and the estimated second location of the electronic device to determine a location measurement error, and correcting the detected first location of the electronic device based on the determined location measurement error.

In one aspect of the invention, a method for determining the location of a device is described. The method involves using one or more signal emitting platforms, which are capable of performing a wide variety of operations. In some embodiments, for example, the signal emitting platform is capable of physical movement. Various embodiments relate to signal emitting platforms, devices, systems, servers, computer code, methods and techniques for determining the location of a device.

A service providing system includes a mobile apparatus that moves to a user in response to receiving an instruction to provide a service from the user and provides the service to the user after obtaining approval; and a client apparatus that manages a schedule input by the user, and, in response to receiving the instruction, transmits an instruction which is derived from the received instruction, the received instruction including information of at least one of a designated date and time and a designated location at which the service is to be provided. The client apparatus includes a display that displays a schedule in which a service providing schedule is added to the schedule input by the user according to a schedule display instruction, and the mobile apparatus moves to a scheduled location at a scheduled date and time and provides the service.

Provided are a method and apparatus for managing a beacon device. More particularly, a beacon management server is connected with the beacon device through a communication network and configured to periodically updates and manages a valid period of the beacon device. The beacon device initializes itself by autonomously deleting beacon information stored therein when the beacon device has been disconnected from the beacon management server for a certain time or more. Thus, the beacon device may be managed through the beacon management server. An operation of the beacon device may be controlled even when the beacon device is lost, thereby preventing illegal use of the beacon device by controlling a beacon signal that is transmitted even after the beacon device is lost. In addition, the beacon management server may verify the validity of the beacon device to give security to the beacon device and periodically update the valid period, thereby allowing efficient use of the beacon device.

A method comprises receiving a first received signal strength indicator (RSSI) of a first beacon in an array of beacons and receiving a second RSSI of a second beacon in an array of beacons, calculating a RSSI of the array (r) as a function of the first RSSI and the second RSSI, retrieving a calibrated RSSI value of the array (r′) from a memory, determining whether r>r′, and outputting a signal to a user device responsive to determining that r>r′.

A method comprises receiving a first received signal strength indicator (RSSI) of a first beacon in an array of beacons and receiving a second RSSI of a second beacon in an array of beacons, calculating a RSSI of the array (r) as a function of the first RSSI and the second RSSI, retrieving a calibrated RSSI value of the array (r′) from a memory, determining whether r>r′, and outputting a signal to a user device responsive to determining that r>r′.

Methods and apparatus for processing of GNSS data derived from multi-frequency code and carrier observations are presented which make available correction data for use by a rover located within the region, the correction data comprising: the ionospheric delay over the region, the tropospheric delay over the region, the phase-leveled geometric correction per satellite, and the at least one code bias per satellite. In some embodiments the correction data includes an ionospheric phase bias per satellite. Methods and apparatus for determining a precise position of a rover located within a region are presented in which a GNSS receiver is operated to obtain multi-frequency code and carrier observations and correction data, to create rover corrections from the correction data, and to determine a precise rover position using the rover observations and the rover corrections. The correction data comprises at least one code bias per satellite, a fixed-nature MW bias per satellite and/or values from which a fixed-nature MW bias per satellite is derivable, and an ionospheric delay per satellite for each of multiple regional network stations and/or non-ionospheric corrections. Methods and apparatus for encoding and decoding the correction messages containing correction data are also presented, in which network messages include network elements related to substantially all stations of the network and cluster messages include cluster elements related to subsets of the network.