News Academy of Engineering Sciences A.M. Prokhorov Annotation << Back Two-dimensional bar code as an identification mark in access control systems Ju.Ju. Gromov A.A. Tikhomirova P.A. Scherbinin A.V. Yakovlev The possibility of using two-dimensional bar codes as an identification mark for the access control systems is described. It is proposed to use as the main characteristics of two-dimensional bar codes applicability such their properties, as compact size, the size of alphabet, which is used for encoding of different data types(e.g., numeric and alphanumeric information); the stability of bar code dimensional detection; the ability to restore the information in partially damaged bar code; the simplicity of bar code creation; the simplicity of recognition and readout speed; the ease of application of bar code on identifier. The comparison criteria are given and the most suitable for this criteria bar code among the other popular two-dimensional bar codes such as QRcode, Data Matrix, Microsoft Tag, Aztec Code is chosen. The analysis of two-dimensional bar codes showed, that the above-mentioned bar codes are almost comparable according to their basic characteristics, but the QR-code has at least two advantages: they are high information capacity and detection speed, which allow to use it in this subject field. Keywords: two-dimensional bar code, an identification mark, the consistency (stability) of bar code dimensional(spatial) detection, information capacity. Contacts: E-mail: gromovtambov@yandex.ru Pp. 03-11.