The Position interface represents the position of the concerned device at a given time. The position, represented by a Coordinates object, comprehends the 2D position of the device, on a spheroid representing the Earth, but also its altitude and its speed.
The Position.coords read-only property, a Coordinates object, represents a geographic attitude: it contains the location, that is longitude and latitude on the Earth, the altitude, and the speed of the object concerned, regrouped inside the returned value. It also contains accuracy information about these values.
The Position.timestamp read-only property, a DOMTimeStamp object, represents the date and the time of the creation of the Position object it belongs to. The precision is to the millisecond.
The position read-only property of the VRPose interface returns the position of the VRDisplay at the current VRPose.timestamp as a 3D vector.