Apparatus and method for providing a graphic representation or graphic representation sequence for detection by a detector

Apparatus for providing a graphic representation (1, 2) or graphic representation sequence for detection by a detector (3), the apparatus comprising:

• at least one light source (4, 5) emitting at least one definable light colour or light colour spectrum,
• a coloured graphic representation (1, 2) or graphic representation sequence, wherein the at least one light source (4, 5) illuminates the coloured graphic representation (1, 2) or graphic representation sequence, so that depending on the at least one light colour or light colour spectrum the coloured graphic representation (1, 2) or a part of the coloured graphic representation (1, 2) is either visible by the detector (3) with at least one of a predefinable intensity or a predefinable colour or not visible by the detector (3),
• a control unit (6) configured for defining and providing an illumination sequence of the at least one light source (4, 5), so as to provide a change of visibility of the graphic representation (1, 2) or of a part of the graphic representation (1, 2) by the detector (3), and
• evaluating means configured for:
• verifying a coincidence or relationship of the provided graphic representation (1, 2) or graphic representation sequence with corresponding data detected by the detector (3);
• and
• when the coincidence or relationship cannot be verified, identifying the detector (3) as experiencing a malfunction.