Abstract: A method includes: receiving, in a first tag, a first security certificate for a second tag and a session token corresponding to an arrangement involving the first and second tags; determining, by the first tag, that the second tag satisfies a proximity criterion with regard to the first tag; receiving, in the first tag and from the second tag, the first security certificate and the session token; and generating, by the first tag and in response to the determination and the receipt of the first security certificate and the session token, a first output corresponding to verification of a custodian of the second tag as a participant in the arrangement.

Abstract: An application-to-component communication helper facilities communication between applications running an in-vehicle computer to an in-vehicle component. Each vehicle part has a corresponding object, and each object exposes a pre-defined Device Communication Application Programming Interface (DCAPI). Some objects are built-in, meaning that they are defined to some degree by the operating system, and rely on the operating system for at least parts of their functionality. Other objects are add-on objects, meaning that they are provided apart from the operating system, for subsequent installation and use in conjunction with the operating system. The operating system provides a “device helper” that allows add-on components to participate and utilize access management and notification features provided by the operating system. The device helper exposes its method for use by corresponding device-com methods of component objects.