Abstract: An OBD2 device (safety device) monitors vehicle information such as vehicle speed, which vehicle information is electronically publishes and subscribed to by a safety monitoring application on a mobile communication device. The safety monitoring application determines when predetermined vehicle motion criteria have been meet and requests that the OBD2 device send a human interface device (HID) keyboard command to the mobile communication device, where the HID keyboard command is a screen lock command. The OBD2 device send the HID keyboard command to the mobile communication device which locks the screen of the mobile device.

Abstract: A power supply configured to emulate the functionality of ignition-switched power in a vehicle is configured to plug into an on-board diagnostics port (OBD-II) in the vehicle. The power supply includes a controller that is configured to determine the operating protocol to use and then communicates queries based on the determined protocol to obtain the current values for the engine speed and vehicle speed. The controller compares the current values against predetermined thresholds to determine whether the vehicle operating state is in an ignition-on state. When in the ignition-on state, the controller asserts an enable control signal, which is provided to a switch that responds by switching the un-switched vehicle battery from the OBD-II port to an output interface of the power supply. When the controller determines that the vehicle is no longer in an ignition-on state, the controller de-asserts the enable control signal, thereby removing the power from the output interface.

Abstract: A power supply configured to emulate the functionality of ignition-switched power in a vehicle is configured to plug into an on-board diagnostics port (OBD-II) in the vehicle. The power supply includes a controller that is configured to determine the operating protocol to use and then communicates queries based on the determined protocol to obtain the current values for the engine speed and vehicle speed. The controller compares the current values against predetermined thresholds to determine whether the vehicle operating state is in an ignition-on state. When in the ignition-on state, the controller asserts an enable control signal, which is provided to a switch that responds by switching the un-switched vehicle battery from the OBD-II port to an output interface of the power supply. When the controller determines that the vehicle is no longer in an ignition-on state, the controller de-asserts the enable control signal, thereby removing the power from the output interface.