Method for checking a smartphone-verifiable security feature, smartphone-verifiable security feature and value or security document

摘要

The invention relates to a method for checking a smartphone-verifiable security feature, with optical excitation of a phosphor of a security feature (1), which consists at least partially of the phosphor, by means of a light source of a smartphone (7); Detecting a luminescence of the phosphor, which the phosphor emits on the optical excitation, by means of an image acquisition device (9) of the smartphone (7); and evaluating image recordings of the security feature (1) that are recorded during the decay time by means of the image recording device (9), by means of an evaluation device of the smartphone (7) and using one or more software applications that are installed on the smartphone (7) so that they can run are. The evaluation comprises determining electronic information that is encoded in a machine-readable code, which is part of the security feature (1) and at least partially consists of the phosphor; Determining an optical parameter for the luminescence in the frequency and / or the time domain; and comparing the optical parameter with a reference parameter in order to check the authenticity of the security feature (1). In addition, a smartphone-verifiable security feature and a value or security document with a smartphone-verifiable security feature are disclosed.