42 Creation of digital twins of work environments; computer software for 3D tracking of objects and position and distance sensors; software for 3D tracking of objects and position and distance sensors; electronic devices being wireless item locators; electronic devices being wireless location finders; computer software for measuring distance and tracking location; computer software for determining the position of an item in physical space, and for the management, distribution and application of the resulting information; computer firmware, namely localisation algorithms and control software; software platform that provides spatial and localization data storage, processing, and analytics for acquired spatial and localization data; electronics for detection and precision location, namely, integrated circuits and antennas, anchor stations, mobile activity and position and location trackers, position and location trackers, universal position and location trackers, transponders.