PORTABLE DEVICE AND METHOD OF AUTHENTICATING MARKING Russian patent published in 2017 - IPC G07D7/12 G06K7/14 

FIELD: physics.

SUBSTANCE: portable device comprises: an image forming unit, a mark detecting unit, a parameter estimating unit for determining a value of the predetermined spectrum parameter, an angle estimator for determining the value of the viewing angle between the said image forming unit and the said marking, and an authentication unit made with the possibility of making a decision to establish the authenticity based on, at least, two values of the spectrum parameter and the corresponding viewing angles. The method for authenticating a marking, comprises: using the image forming unit, detecting data corresponding to the said marking, determining the first value of the predetermined spectrum parameter at the first viewing angle and the second value of the said predetermined spectrum parameter at the second viewing angle, and deciding, whether to establish authenticity based on the indicated, at least, two values of the spectral parameter and the corresponding values of the viewing angle.

EFFECT: simplification and wide application of the known systems for establishing the authenticity of markings.

16 cl, 4 dwg