An electromagnetic radiation source locating system including an electromagnetic radiation sensor including an antenna configured to detect a radiant energy transmission. A position detector is in communication with the controller and is configured to detect the position of the antenna relative to a reference coordinate system, while an orientation sensor is in communication with the controller and is configured to detect the orientation of the antenna and provide an orientation signal to the controller. A range sensor is configured to detect the distance to an aligned object in the path of a directional vector and provide a distance signal indicative thereof to the controller. An aerial vehicle may be in communication with the controller and configured to drop a marker for guiding navigators to the source of the radiant energy transmission.

A light source emits a modulated light, and a radio-frequency transceiver disposed therewith emits a radio-frequency signal. A mobile device may receive either or both signals and determine its position based thereon. The light and radio-frequency sources may be disposed in node in a network of said sources, and the nodes may communicate via the radio-frequency transceivers.

A user's terminal device and a service management server can provide specific service content associated with a registered beacon service to a user. In an embodiment, the terminal device registers at least one beacon service at a user's request and sends information about the registered beacon service to the service management server. Then the terminal device receives first beacon identification information corresponding to the registered beacon service from the service management server and stores the first beacon identification information. Further, when a beacon signal containing second beacon identification information is received from a beacon device, the terminal device compares the second beacon identification information with the first beacon identification information. If both of identification information are identical with each other, the terminal device offers service content corresponding to the second identification information.

A user's terminal device and a service management server can provide specific service content associated with a registered beacon service to a user. In an embodiment, the terminal device registers at least one beacon service at a user's request and sends information about the registered beacon service to the service management server. Then the terminal device receives first beacon identification information corresponding to the registered beacon service from the service management server and stores the first beacon identification information. Further, when a beacon signal containing second beacon identification information is received from a beacon device, the terminal device compares the second beacon identification information with the first beacon identification information. If both of identification information are identical with each other, the terminal device offers service content corresponding to the second identification information.

A system includes a machine-readable storage medium, a processor in communication with the machine-readable storage medium, communication circuitry in communication with the processor; and a plurality of sensors in communication with the processor. Each of the plurality of sensors is configured to generate an electrical signal in response to receiving wave energy. The processor is configured to control data acquisition for authenticating an object using at least a subset of the plurality of sensors, calculate an authentication value based on signals received from the subset of the plurality of sensors, and cause the communication circuitry to transmit an authentication request including the authentication value to an authentication entity.

A system includes a machine-readable storage medium, a processor in communication with the machine-readable storage medium, communication circuitry in communication with the processor; and a plurality of sensors in communication with the processor. Each of the plurality of sensors is configured to generate an electrical signal in response to receiving wave energy. The processor is configured to control data acquisition for authenticating an object using at least a subset of the plurality of sensors, calculate an authentication value based on signals received from the subset of the plurality of sensors, and cause the communication circuitry to transmit an authentication request including the authentication value to an authentication entity.

Heatmap data, such as Angle-of-Arrival heatmap data, is generated and stored for a plurality of antennas of wireless communication device. A centroid of the plurality of antennas is determined. A heatmap is computed for the centroid for a measured parameter across a plurality of bins at coordinates within a region of interest. Heatmap data for the centroid is stored. For a given one of the plurality of antennas, a difference is computed between a heatmap for the given antenna and the heatmap for the centroid. The difference data representing the difference is stored for the given antenna.

A method includes: storing, within first and second computing devices, a first immutable token (IT) that incorporates at least a first data concerning a first characteristic of a registered virtual object; receiving, at the first and second computing devices, and from a reading device, a request to authenticate another virtual object as being the registered virtual object based on a second IT associated with the other virtual object; separately comparing, at the first and second computing devices, the second IT to the first IT; separately determining, at the first and second computing devices, whether to authenticate the other virtual object based on a degree to which the second IT matches the first IT; and separately transmitting, from the first and second computing devices, and to the reading device, separate indications of whether the other virtual object is able to be authenticated.

A method includes: storing, within first and second computing devices, a first immutable token (IT) that incorporates at least a first data concerning a first characteristic of a registered virtual object; receiving, at the first and second computing devices, and from a reading device, a request to authenticate another virtual object as being the registered virtual object based on a second IT associated with the other virtual object; separately comparing, at the first and second computing devices, the second IT to the first IT; separately determining, at the first and second computing devices, whether to authenticate the other virtual object based on a degree to which the second IT matches the first IT; and separately transmitting, from the first and second computing devices, and to the reading device, separate indications of whether the other virtual object is able to be authenticated.

In some aspects, a mobile device may receive, from a transmitting device, the signal by a plurality of antennas. The mobile device may measure one or more phase differences among the signal received at the plurality of antennas. The mobile device may determine a first set of possible values for the angle of arrival that are consistent with the one or more phase differences. The mobile device may measure one or more signal values using one or more sensors of the mobile device. The mobile device may for each of the first set of possible values, determining a confidence score based on the one or more signal values. The mobile device may select, based on the confidence scores, one of the first set of possible values as the angle of arrival.