The DIGIDOK electronic thesis management system was launched at Kodolanyi Janos University College in 2008. This paper presents the technological background of the system, concentrating on software-related issues and highlighting the security possibilities provided by the Adobe pdf files chosen as a format for archiving. The applied solution ensures that the thesis database can only be accessed via the dedicated client computers of the university college branches operating in several cities. If a protected file is transferred from the dedicated client computer onto another computer, it is impossible to view its content. The paper provides detailed instructions on how to dedicate the client computer workstations both in Windows and Linux operating environment. It is demonstrated how to change the security settings of several thousands of pdf files automatically in order to ensure the secure use of the system. The paper also presents the data conversion process between DIGIDOK and the HUNTEKA integrated library system, used by the University College Library. A summary is given on the challenges of the introduction of DIGIDOK and the new tasks that have emerged from it for the staff of the University College Library.