Banknote has optical markings such as bar-codes or optical gratings containing complementary information

摘要

The banknote includes at least two optical markings (6,7) which contain complementary information. The banknote may include a security thread. The first optical marking (6) is provided in the region of the security thread, the second marking outside this region. The optical markings may be bar-codes or optical gratings. The banknote may be opaque at least in the region of the second optical marking. The security thread may be a dipole or comprise an integrated circuit storing the information of at least one optical marking.