Invisible UV is a method of adding uniqueness to a plastic card. UV light detect printing inks are invisible or inconspicuous to the human eye when viewed in visible light, but fluoresce in bright colors when exposed to UV light. Invisible UV inks can avoid counterfeiters, and authenticate document when the user has the required UV light source and knowledge of how the document should appear. UV light detect printing usually applies on ID card, membership card, money transfer card and more. When used in conjunction with a black light, UV light ink provides a way to help prevent card replication and ensure card authenticity. UV light ink is perfect for loyalty cards, membership cards, gift cards, or any other type of card requiring fraud protection.