Abstract: In a method for authenticating persons, video information of certain body features associated with a user or a user group is recorded in a point of presence (POP). Such recorded video information is processed to derive biometric keys, which are stored in tables of a biometric server and in a SIM-card of the user. Each biometric key in the tables is assigned to a respective user. When the user inserts the SIM-card containing a personal biometric key into a communication terminal device, video information describing current body feature of the user is recorded via a video sensor that is not in the communication terminal device. The recorded current video information is then transmitted from the video sensor to the communication terminal device. To authenticate the user, the recorded current video information is processed to derive current biometric keys and compared with pre-stored biometric keys. The authenticity of the user is ensured if the comparison yield a positive result.

Abstract: Proposed are a cryptographic security method and electronic devices suitable therefor, in particular portable electronic security modules. Stored in the electronic device is a secret private customer key of a first digital key pair, consisting of the secret private customer key and a public customer key. Using the private customer key, a digital customer signature is generated in the electronic device from object data to be signed. Stored in the electronic device is a secret private key of a second digital key pair, consisting of the secret private key of a security provider and a public key of the security provider. Using the private key of the security provider, a digital signature certificate is generated in the electronic device from the customer signature as well as from further information, in particular a customer identification and from personal customer attributes.

Abstract: In a wireless local communication network, a so-called Wireless Local Area Network (WLAN) a prepaid value code is transmitted from a wireless communication terminal via an air interface to an access point unit of the wireless local communication network, a so-called access point. The validity of the received value code is checked in a value code database by a centralized access control server. If applicable, the access to the wireless local communication network and to communication networks connected thereto, for example the Internet, is cleared for the wireless communication terminal. After the clearance, a monetary amount is credited to the operator of the access point unit and the validated value code is cancelled in the value code database.

Abstract: The invention relates to a method for mobile IP nodes (10) in heterogeneous networks (21-24) in which an interface administration module (134) of the mobile node (10) checks the mobile node (10) for available physical network interfaces (14-17), draws up a lookup table with the available and configurable physical network interfaces (14-17), and links itself to one of the available physical network interfaces (14-17). IP applications (11) of the mobile nodes (10) access the heterogeneous networks via a virtual IP network interface (133) generated in the mobile node (10), the permanent virtual IP network interface (133) being connected to the present network (21-24) via the interface administration module (134). During the change of physical network interfaces (14-17) of the mobile node (10), the linking of the permanent virtual IP network interface to the network (21-24) is updated by means of the interface administration module (134) based on the lookup table.

Abstract: Decoding device with a decoding module (4) that decodes digital digitally encoded image data. The decoding of said image data is dependent on the programming of an FPGA circuit.

Abstract: The interchangeable battery (2) for mobile radio telephones (3) comprises battery cells in a housing and electric feeding contacts (22) for powering the mobile telephone (3) as well as a radio interface (20-21), for example a RFID element, a GPS receiver, a radio clock signal receiver etc. Different batteries, which each operate according to another communication protocol, can be provided.