to the step of provision of the service can involve a connection with a contact center or be self service i e involve the execution of operations on the totem without further interactions with external units with the communication of the u201c standby u201d and u201c activity u201d states the main application can control the secondary application terminating it when it returns to the u201c standby u201d state at the end of an activity or after a timeout when the end user does not provide the initial input communication of the statuses is necessary only for the secondary applications that enter a wait state for input on the part of the user such input being entered for example by way of a page displayed on the screen of the totem therefore if the execution of a service does not require this input because for example the service consists of showing images relating to a determined product on the screen of the totem then communication of the state of the application is not necessary since the application if executed goes directly to the u201c active u201d state and at the end of its execution returns control of the totem to the main application it is similarly necessary to manage the situation in which the secondary application undergoes a malfunction and does not correctly terminate its execution preferably the system according to the present invention has mechanisms for controlling the state of operation of the applications on the totem which are based for example on timeouts that return control of the totem to the main application once a preset time threshold has been exceeded.