| abstract |
The invention relates to a coding system for forming a security feature in or on one or more security or value documents, with at least two individual phosphors, and at least three phosphor combinations formed with the at least two individual phosphors, the at least three phosphor combinations in the form of at least three luminescent security elements for the security feature in or on which one or more security or value documents are attached or attached, each of the at least three phosphor combinations having an identical spectral sequence of the emission lines and / or emission bands to which a code is assigned and the at least three luminescent ones Security elements of the security feature have different color coordinates in a CIE standard color system under given excitation conditions, so that they cause different color impressions in a viewer. |