METHOD OF DETERMINING AN AUTHENTICITY OF A VALUE DOCUMENT, METHOD OF MANUFACTURING A VALUE DOCUMENT AND SET OF VALUE DOCUMENTS

The invention relates to a method of determining an authenticity of a value document (1). In step (S1) of the method a value document (1) having a first luminescent area (11) and a second luminescent area (12) is provided. In step (S2) the first luminescent area (11) is illuminated using a first illumination (21), and in step (S3), upon illuminating the first luminescent area (11) using the first illumination (21), a first luminescence intensity (31) emitted by the first luminescent area is measured. In step (S4), the second luminescent area (12) is illuminated using the first illumination (21), and in step (S5), upon illuminating the second luminescent area (12) using the first illumination (21), a second luminescence intensity (32) emitted by the second luminescent area (12) is measured. In step (S6), an authenticity information is obtained based on the measured first and second luminescence intensities (31, 32).