FIELD: protection of securities and documents. SUBSTANCE: protection of securities and documents. The method consists in the fact that in the process of application on the surface or injection inside of identifying substances spatial modulation is accomplished of at least one substance parameter influencing the characteristic of indicated radiation. The device has a means of modulation made in the form of a mechanism with a cam having the shape of the working surface providing for at least one law of measurement of the substance parameter on the preset length of the paper. The device is provided with a means of spatial modulation of properties of identifying substances. EFFECT: enhanced efficiency of protection. 10 cl, 5 dwg
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Authors
Dates
2001-09-27—Published
2001-02-06—Filed