Abstract: A system comprises a plurality of first computing devices, wherein each first computing device is wearable by a user or is affixed to an asset within an environment and configured to generate and transmit a message; and a plurality of second computing devices installed within the environment, wherein a portion of the plurality of second computing devices are configured to detect at least one of the plurality of first computing devices, receive messages transmitted by a detected first computing device, and timestamp the messages before transmitting the messages to a computing server system. The computing server system is configured to determine at least a location of the detected first computing device based at least upon the messages received from the portion of the plurality of second computing devices.

Abstract: There is disclosed a multi-dimensional user interface controller apparatus for providing a multi-dimensional user input. In an embodiment, the apparatus comprises a disc adapted to be tilted to control at least two-axes, and depressible in a third axis, and an outer ring surrounding the disc, the outer ring adapted to rotate about the disc to control a fourth axis. In use, the disc and the outer ring are controllable to provide at least four-axes of simultaneous control inputs. In an embodiment, the multi-dimensional user interface controller apparatus further comprises a plurality of magnetic sensors to sense the tilt of the disc or a press on the disc. In another embodiment, the disc further comprises a touch-sensitive top surface adapted to sense one or more fingers touching the surface.