Optical Document Security – the follow-up to the biannual Conference on Optical Security and Counterfeit Deterrence Techniques focuses on technical and scientific developments in optical security for valuable documents and products. The conference offers a platform to researchers, developers, manufacturers and users of security to present their findings, new work and new techniques on a technical and scientific level. Some of the most significant developments in banknote and identity document security and production technology in recent years have been first described in public at these conferences and will this tradition will be continued.