Abstract: A computer-implemented method of operating a device is provided. The method comprises operating a sensor to capture a data input, individuating an element of the data input, tagging an individuated element with metadata, matching the metadata with an associated permission set, and applying a restricting function defined in the associated permission set to the individuated element during a process flow to produce augmented reality output data restricted as required by the associated permission set. A device is also provided, comprising a sensor, an individuating component to individuate an element of sensor data from the sensor, a tagging component to tag the individuated element, a matching component to match a tag of the individuated element with a permission of a permission set, and a restricting function component to restrict an application's interaction with the individuated element.

Abstract: A rack-and-pinion type hoist has an improved braking apparatus that includes a spring buffer, preferably hydraulic, carried by the cage of the hoist, a rotatable shaft also carried by the cage and positively engaged with a member extending along the mast so as to be driven in rotation by movement of the cage along the mast and connecting means for engaging the shaft and the buffer comprising a centrifugal governor driven by rotation of the shaft and operating, in response to rotation of the shaft in excess of a pre-determined rate of rotation, to provide positive drive to a linearly movable member, the movement of which is opposed by the buffer.