42 Computer programming; services of a database, development and planning of facilities for telecommunication; electronic storing and recovering of data and documents; computer services; computerized ordering via internet, especially mediation of services in the field of providing of food and drink, temporary accommodation, medical, hygienic and beauty care, veterinary and agricultural services, legal advice and representation, scientific and industrial research, computer programming and computer services; providing of soft- and hardware for online access for the construction of a tree-like directory with the function of an electronically spread directory service, which enables it to administrate complex networks with only one address database in the system; services of a certification center (trust-center), namely the issuance and administration of digital encryption keys and/or digital certificates and/or digital signatures, verification and confirming of the authenticity of utilized encryption keys, secured custody of secret encryption keys, administration of lists of those blocked from use and certification of legal relationships, digitalization of analogue information and/or its reproduction; technical advice in the field of data transmission, data exchange and conversion of data as well as in the field of electronic commerce; providing of access to external database and of secured access to certificate services