9 Currency authentication apparatus and equipment; detectors, namely, detectors for verifying the authenticity of banknotes and other security documents and sensing apparatus and equipment; security scanner apparatus and equipment for detecting security documents; security inks and security devices used in bank notes and other security documents; optical detection apparatus and equipment; diffraction gratings; optically variable devices, namely, security devices for use with bank notes, checks, credit cards and other security documents; security devices in this class for bank notes, checks, credit cards and other security documents; security devices in this class for bank notes, checks, credit cards and other security documents; security products in this class incorporating optically variable devices, security inks or other security devices, namely, credit cards, checks, bank notes and other security documents; computer hardware and software, namely, computer hardware and software for use in currency authentication equipment and apparatus and computer hardware and software for producing optically variable devices and other security devices