Zhukov Igor, Mikhaylov Dmitry, Dusha Igor, The Main Construction Principles of Access Control System Using Proximity Technology, International Journal of Soft Computing, Volume 11,Issue 1, 2016, Pages 4-6, ISSN 1816-9503, ijscomp.2016.4.6, (https://makhillpublications.co/view-article.php?doi=ijscomp.2016.4.6) Abstract: This study deals with the security issues linked with using contactless identifiers based on Radio Frequency Identification (RFID), providing controlled access, for example, into premises. Researchers, tell about the main problems occurring with the usage of such identifiers and disclose the basic methods of security increasing. The security level of many modern cards using RFID technologyis not significant. That is why this study includes the information about technical methods, organizational methods and cryptographic methods of information security. Keywords: Radio Frequency Identification (RFID);Access control system;contactless identifiers;proximity-card;security