A communication device has a storage, a GPS receiver, a communicator, and a controller. The storage stores a planned travel route. The GPS receiver receives GPS signals. The communicator communicates with the outside. The controller sets an area including the planned travel route as a target area, and when an out-of-area state has begun in which the location of the communication device falls outside the target area, transmits information indicating the location of the communication device as observed when the out-of-area state began to a previously registered transmission destination.

In an example implementation, a method of tracking a mobile device includes determining by a tracked device, that a pairing status between the tracked device and a command device has changed from a paired status to an unpaired status. A timer is started on the tracked device in response to determining the unpaired status, and in response to the timer reaching a threshold time, a distress packet is transmitted from the tracked device that indicates the tracked device is lost.

A power distribution box and method of communicating via the power distribution box are provided. A power input in the power distribution box is coupled to a power output to provide power to external devices. A gateway device supported by the housing of the power distribution box includes a wireless network module for communicating with power tools and a cellular module for communicating via a cellular network with a power tool monitoring system. The gateway may be removable from the power distribution box. A translation controller in the gateway enables communication between the wireless network module and the external network using the cellular module. The translation controller translates messages between the power tools and external network. The messages may include location data or operational data associated with the power tool.

The invention relates to a complex proximity safety and warning system. The invention provides a safety system comprising a generator that generates a magnetic field that establishes a boundary, where the generator is capable of receiving radio frequency signals. Also provided is a radio frequency device that sends radio frequency signals, the radio frequency device being capable of sensing the magnetic field and generating a radio frequency response.

In an example implementation, a method of tracking a mobile device includes determining by a tracked device, that a pairing status between the tracked device and a command device has changed from a paired status to an unpaired status. A timer is started on the tracked device in response to determining the unpaired status, and in response to the timer reaching a threshold time, a distress packet is transmitted from the tracked device that indicates the tracked device is lost.

The subject matter of this specification can be embodied in, among other things, a mobile device accessory includes a housing defining an attachment surface that is configured to engage a mobile device, a wearable component configured to be worn by a user of the mobile device, a separation detector configured to detect separation of the wearable component relative to the housing, and provide a signal when the wearable component becomes separated from the housing, and an alarm device configured to activate in response to the signal. Alternatively, the mobile device accessory may be a standalone device not designed to be attached to a mobile device.

The invention relates to a complex proximity safety and warning system. The invention provides a safety system comprising a generator that generates a magnetic field that establishes a boundary, where the generator is capable of receiving radio frequency signals. Also provided is a radio frequency device that sends radio frequency signals, the radio frequency device being capable of sensing the magnetic field and generating a radio frequency response.

A vehicle antitheft system includes a house security device and a vehicle security device. The house security device includes a detection unit and a transmission unit configured to transmit a notification when a state change of a predetermined security unit is detected by the detection unit. The vehicle security device includes a reception unit configured to receive the notification transmitted from the transmission unit and a function control unit configured to control a vehicle antitheft function depending on whether the notification is received by the reception unit. The function control unit is configured to release the vehicle antitheft function when the notification is not received and a regular vehicle key is used to operate a vehicle, and to restrict releasing of the vehicle antitheft function when the notification is received and the regular vehicle key is used to operate the vehicle.

The subject matter of this specification can be embodied in, among other things, a mobile device accessory includes a housing defining an attachment surface that is configured to engage a mobile device, a wearable component configured to be worn by a user of the mobile device, a separation detector configured to detect separation of the wearable component relative to the housing, and provide a signal when the wearable component becomes separated from the housing, and an alarm device configured to activate in response to the signal. Alternatively, the mobile device accessory may be a standalone device not designed to be attached to a mobile device.

A method of monitoring separation between an electronic device and an electronic base that includes a chipset and a wireless communication module. An electronic/electrical link is established between the electronic device and the electronic base. If the electronic/electrical link is severed between the electronic device and the electronic base, then the chipset generates a separation notification. The chipset then sends both the separation notification with the wireless communication module to contact information stored on the chipset. The contact information is for an authorized user profile of the electronic device.