FIELD: information technology.
SUBSTANCE: group of inventions relates to encoding digital information on a surface, particularly of two-dimensional structures. Pattern for coding an element with digital information on a surface, including a specific arrangement (P1) of a plurality of symbols belonging to a set of symbols (ENS1), and each symbol in arrangement being intended for coding of a portion of said digital information element, wherein each symbol includes at least one differential pair of elements (E1, E2) positioned in a specific way, each element being characterised by a parameter, parameter of first element of each differential pair having a first value and parameter of second element of each differential pair having a second value different from first value.
EFFECT: technical result is improved protection of articles.
16 cl, 6 dwg
