An operation method of a first apparatus for supporting disaster communications includes obtaining map information of a disaster area from a server; obtaining information on a location of the first apparatus, and obtaining environmental condition information of the first apparatus indicating a risk of an area to which the first apparatus belongs; obtaining information on a location and environmental condition information of a second apparatus located in the disaster area from the second apparatus; determining a disaster risk level indicating a risk level for each location in the disaster area based on the location and environmental condition information of the first apparatus and the location and environmental condition information of the second apparatus; and updating the map information by reflecting the disaster risk level.

A monitoring system for allowing a guardian to monitor a keeper, the monitoring system a guardian unit to be worn by the guardian, the guardian unit has a power source; and a transceiver; a key incorporated into the guardian unit; a band to be worn by the keeper, the band having a GPS unit; a lock to release the band from the keeper; a power source; and a control system having a transceiver to wirelessly communicate with the transceiver of the guardian unit; the lock is to unlock through communication with the key of the guardian unit; a network, having a computing device; and a platform accessible from the computing device; the platform is to allow the guardian to monitor activity associated with the keeper via data received by the control system of the band.

Disclosed herein are a server, system, method, and recording medium for searching for missing children, using mobile crowdsourcing. According to an embodiment, a server for searching for missing children, using mobile crowdsourcing, comprises a communication unit and a control unit. The communication unit receives a missing-child incident signal from a guardian terminal (held by a parent or guardian) and receives a first location information as to movements of a missing child from a child terminal (carried by the missing child) and sends the first location information received to at least one assistance terminal and receives landmark information from the assistance terminal(s) when a (degree of) similarity between the first location information sent to the assistance terminal(s) and a second location information detected by the assistance terminal(s) is higher than a preset value. The control unit generates a movement or moving path of the missing child, using the landmark information received.

Systems and methods for controlling and locating the source of a remote signal, comprising a first electronic device configured to transmit a first wireless signal containing information concerning a power level of the first electronic device, and a second electronic device configured to: measure a strength of the first wireless signal; approximate a proximity of the second electronic device to the first electronic device; identify, based on the approximated proximity and the information concerning the power level of the first electronic device, one or more changes to a configuration of the first wireless signal for optimizing power consumption of the first electronic device during a search for the first electronic device; and instruct the first electronic device, via a second wireless signal, to transmit the first wireless signal with the at least one or more identified configuration changes.

A proximity based ad-hoc messaging, alerting, and tracking system can be employed to quickly and efficiently propagate alerts when a child or other individual becomes lost. Various types of alerts can be provided to facilitate locating a lost individual even in scenarios where a network connection or GPS is not available. The system can also be employed to track the presence of an individual after traveling in a vehicle to enable detecting when the individual has been separated from all guardians such as would be the case when the individual is left in the vehicle.

Systems and methods for controlling and locating the source of a remote signal, comprising a first electronic device configured to transmit a first wireless signal containing information concerning a power level of the first electronic device, and a second electronic device configured to: measure a strength of the first wireless signal; approximate a proximity of the second electronic device to the first electronic device; identify, based on the approximated proximity and the information concerning the power level of the first electronic device, one or more changes to a configuration of the first wireless signal for optimizing power consumption of the first electronic device during a search for the first electronic device; and instruct the first electronic device, via a second wireless signal, to transmit the first wireless signal with the at least one or more identified configuration changes.

An operation method of a first apparatus for supporting disaster communications includes obtaining map information of a disaster area from a server; obtaining information on a location of the first apparatus, and obtaining environmental condition information of the first apparatus indicating a risk of an area to which the first apparatus belongs; obtaining information on a location and environmental condition information of a second apparatus located in the disaster area from the second apparatus; determining a disaster risk level indicating a risk level for each location in the disaster area based on the location and environmental condition information of the first apparatus and the location and environmental condition information of the second apparatus; and updating the map information by reflecting the disaster risk level.

The invention relates to methods and devices for supervising a baggage item using a security device comprising at least one sensor, a processor connected to said sensor, and a communication unit connected to said processor. Said method comprises the steps of monitoring (S101), by the at least one sensor, a status of a baggage item, detecting (S102), by the processor, a change in the status of the baggage item and determining (S103), based on a detected change in the status, whether a notification is to be issued, and transmitting (S104), by the communication unit, the notification to a supervision unit.

A proximity based ad-hoc messaging, alerting, and tracking system can be employed to quickly and efficiently propagate alerts when a child or other individual becomes lost. Various types of alerts can be provided to facilitate locating a lost individual even in scenarios where a network connection or GPS is not available. The system can also be employed to track the presence of an individual after traveling in a vehicle to enable detecting when the individual has been separated from all guardians such as would be the case when the individual is left in the vehicle.

Systems and methods for controlling and locating the source of a remote signal, comprising a first electronic device configured to transmit a first wireless signal containing information concerning a power level of the first electronic device, and a second electronic device configured to: measure a strength of the first wireless signal; approximate a proximity of the second electronic device to the first electronic device; identify, based on the approximated proximity and the information concerning the power level of the first electronic device, one or more changes to a configuration of the first wireless signal for optimizing power consumption of the first electronic device during a search for the first electronic device; and instruct the first electronic device, via a second wireless signal, to transmit the first wireless signal with the at least one or more identified configuration changes.