Polycarbonate is today one of the key materials used in top-of-the-line official identity documents. However, while it greatly hinders forgery, authentication of the card remains a weak point. Twinmark HD2 by Arjowiggins Security responds to this need as it bears the first security watermark in a polycarbonate card.

The main innovation in terms of security consists of a dual watermark, one viewed from the front, one from reverse, completely embedded inside the card, which makes it as easily authenticable as a banknote. Twinmark is a patented technology which combines authentication of the watermark and durability of polycarbonate cards. Twinmark HD2 provides easy authentication, especially for non-experts. The double watermark incorporated in the card offers security against forgery, and renders authentication simple and secure. [www.security.arjowiggins.com]