An access control device for controlling access to a tank defining a storage chamber and access to the storage chamber; the device includes at least one cap and an external apparatus; the cap includes a closure body defining a closed position and an open position; a housing defining a housing volume for the closure body and a reciprocal rotation with respect to the closure body; a connection to connect the closure body to the housing, thereby defining an operating configuration in which said reciprocal rotation is prevented and a non-operating configuration in which it allows said reciprocal rotation, thus preventing said housing from controlling the passage of the closure body between the closed and open positions; and a data connector to provide wireless data connection with the external apparatus to allow it to control the passage of the connection between operating configuration and non-operating configuration.