A device (figure 1) for determining a subscriber's authorization of access to an internet page with verification of the authorization of access, wherein the subscriber has a computer connected to the internet and a mobile terminal registered to the subscriber, wherein the device comprises the following: personal data of the subscriber for the registration of his mobile terminal which are stored in a mobile radio network in a data storage of the mobile radio network provider, and - means for transmitting an access code for the internet page via the mobile radio network to the mobile terminal of the subscriber are provided, wherein the access code identifies the subscriber as being authorized for the internet page, - means (48, 52a, 52b) for linking the personal data for using the mobile radio network with verification means allowing the access to the internet page are provided, wherein the verification means grant the access to the internet page for authorized persons, - a computer system of a provider of the internet page, characterized in that the computer system of the provider receives the access code simultaneously with the transmission of the access code to the mobile radio terminal, and - the computer system of the provider is configured to validate the access code entered by the subscriber with the access code transmitted by the verification means and to share the internet page to the subscriber in case of a match. personal data of the subscriber for the registration of his mobile terminal which are stored in a mobile radio network in a data storage of the mobile radio network provider, and - means for transmitting an access code for the internet page via the mobile radio network to the mobile terminal of the subscriber are provided, wherein the access code identifies the subscriber as being authorized for the internet page, - means (48, 52a, 52b) for linking the personal data for using the mobile radio network with verification means allowing the access to the internet page are provided, wherein the verification means grant the access to the internet page for authorized persons, - a computer system of a provider of the internet page, characterized in that the computer system of the provider receives the access code simultaneously with the transmission of the access code to the mobile radio terminal, and - the computer system of the provider is configured to validate the access code entered by the subscriber with the access code transmitted by the verification means and to share the internet page to the subscriber in case of a match. - means for transmitting an access code for the internet page via the mobile radio network to the mobile terminal of the subscriber are provided, wherein the access code identifies the subscriber as being authorized for the internet page, - means (48, 52a, 52b) for linking the personal data for using the mobile radio network with verification means allowing the access to the internet page are provided, wherein the verification means grant the access to the internet page for authorized persons, - a computer system of a provider of the internet page, characterized in that the computer system of the provider receives the access code simultaneously with the transmission of the access code to the mobile radio terminal, and - the computer system of the provider is configured to validate the access code entered by the subscriber with the access code transmitted by the verification means and to share the internet page to the subscriber in case of a match.