Abstract: A method of rendering a virtual object by a rendering device includes establishing a communication channel with a mobile device; determining or receiving initial pose information of the mobile device, the pose information defining an initial position and an initial orientation; receiving device information via the communication channel, the device information including orientation, motion, and/or position information for updating the initial pose of the mobile device; using the initial pose information and the device information to determine a current pose of the mobile device, the current pose defining a current position and orientation; receiving first content data from a server system, the first content data representing a virtual object; and, rendering the first content data in the viewport of the rendering device based on the current pose information, the current pose information being used to render the virtual object in spatial alignment with the mobile device.