Proximity sensors; downloadable computer application software for use in mobile devices for integrating electronic data with real world environments for the purpose of providing information in a micro-location context, as determined by proximity sensors and sensor data; downloadable computer software for use in proximity sensors that communicate with nearby mobile devices | Providing an online non-downloadable Internet-based system application featuring technology enabling users to integrate electronic data and mobile devices with real world environments for the purpose of providing information in a micro-location context, as determined by proximity sensors and sensor data; Providing temporary use of non-downloadable web application for integrating electronic data and mobile devices with real world environments for the purpose of providing information in a micro-location context, as determined by proximity sensors and sensor data; Providing an online non-downloadable Internet-based system application featuring technology enabling users to manage, activate and revoke access to tangible items in a micro-location context