electrical devices, namely, data processing devices for communication with cards, namely, data processors for communication with chip cards having an integrated circuit and cards having a contactless interface, data processing devices, namely, data processors for writing data into or onto chip cards, for reading data out of or from chip cards, and for displaying data from chip cards on a display, data processing devices, namely, data processors for personalizing chip cards, machine-readable recording mediums, namely, chip cards having an integrated circuit for storing, processing and providing data and programs, cards having an integrated circuit, namely, electronic chip cards having micro processors for communication with external data processors or with mobile radio terminals, coded telecommunication cards, namely, chip cards, coded cards having a contactless interface, namely, chip cards having an antenna, integrated circuits having characteristic physical properties for protection against forgery for and in connection with cards, namely, electronic chip cards, electrical devices for processing and securing data, namely, encrypting data for cash-less payment transactions, both in online operation and in offline operation, namely, for payment transactions using magnetic stripe cards and electronic chip cards, computer software for applications in computer networks, namely, computer software for processing transactions and data adaptable with internet, intranet and extranet applications, computer software for telecommunication with chip card-activated mobile phones and associated chip cards and mobile phones, computer software programs for activating, changing, testing and displaying data and software structures stored in telecommunication cards, computer software for encrypting and signing data, computer operating system software and computer application software for cards having an integrated circuit, namely, electronic chip cards, computer software for data processors for communication with chip cards, computer programs for developing, managing and maintaining all the above-mentioned kinds of software, recording mediums, namely, data recorders, used in connection with the above-mentioned software