| abstract |
The invention relates to a method for authenticating an optically variable security element ( 1 ), in particular a diffractive security element, with the steps:n a) capturing an image sequence with at least one individual image of the security element ( 1 ) by means of a sensor ( 31 ), in particular a hand-held device ( 3 ), preferably a smartphone, tablet or a PDA; b) checking whether at least one predetermined item of optical information is present in at least one individual image of the image sequence. |