This paper introduces META’s optically variable device (OVD) platform technologies, based on sub-wavelength nano-scale structures and their novel processing for high throughput manufacturing. The origination of nano-scale master shims for embossing and casting has been optimized for precision and throughput of large-scale shims. This new technique for originating OVDs creates distinctive, highly visible colours that are much more discernable than current holographic micro-scale grating-based structures, even in low-light environments.