A system for displaying, by a user, multimedia content items, the system comprising a network: - a server with a memory in which the multimedia content items are saved; - at least one multimedia device, of the smartphone or tablet PC type, with which each user is equipped, for selective displaying display of multimedia content items, which multimedia device is able to receive and make available to the respective user one or more of the multimedia content items that can be obtained from the server; - a radio-frequency identification, RFID, tag provided with a user identification code such that the RFID tag is unambiguously coupled to the specific multimedia device carried by the user; - a plurality of tag readers connected to the server, each of the tag readers being able to identify the RFID tag in order to authorize the sending of one or more of the multimedia content items to the device, the tag readers being distribute in an environment according to a mapping known to the server; the plurality of tag readers being able to locate the multimedia device in the environment in order to authorise the respective multimedia device carried by the user to receive from the server a targeted to and personalized subset of the multimedia content items, the subset being a function of the user identification code and of the location of the RFID tag; and the multimedia device being able to receive and make available to the user that is equipped with it the personalized subset of the multimedia content items, characterized in that the RFID tags are configured to identify a user of a master-type and one or more users of a slave-type, wherein the multimedia device of the user of the master-type is configured to selectively impose a defined behaviour on the multimedia device of the user of the slave-type. - a server with a memory in which the multimedia content items are saved; - at least one multimedia device, of the smartphone or tablet PC type, with which each user is equipped, for selective displaying display of multimedia content items, which multimedia device is able to receive and make available to the respective user one or more of the multimedia content items that can be obtained from the server; - a radio-frequency identification, RFID, tag provided with a user identification code such that the RFID tag is unambiguously coupled to the specific multimedia device carried by the user; - a plurality of tag readers connected to the server, each of the tag readers being able to identify the RFID tag in order to authorize the sending of one or more of the multimedia content items to the device, the tag readers being distribute in an environment according to a mapping known to the server; the plurality of tag readers being able to locate the multimedia device in the environment in order to authorise the respective multimedia device carried by the user to receive from the server a targeted to and personalized subset of the multimedia content items, the subset being a function of the user identification code and of the location of the RFID tag; and the multimedia device being able to receive and make available to the user that is equipped with it the personalized subset of the multimedia content items, characterized in that the RFID tags are configured to identify a user of a master-type and one or more users of a slave-type, wherein the multimedia device of the user of the master-type is configured to selectively impose a defined behaviour on the multimedia device of the user of the slave-type.