A server operates between a patron (user), a subscriber (e.g., owner of a venue of exhibits and its website; museum, stadium, zoo, theme park, etc.), and possibly third parties such as a content distribution network (CDN). Access and content delivery are based on 1) control information provided to a patron device by physical objects at the venue and sent by the patron device to the server as part of a mutual authentication to one another, 2) user-specific information corresponding to the patron device, and 3) a pre-authorization exchange granting user-device access to physical objects and the server with the server receiving access to the user-specific information in order to locate requested information and select a subset thereof adapted in accordance with the user information. Moving physically between exhibits, a patron device rapidly disengages and re-engages the server, based thereon, without repeated logins.