What state-of-the-art technologies are available for adding security features to ID documents to make them counterfeit-proof? This question was the focus of the second Security Printing Day held by Heidelberger Druckmaschinen AG (Heidelberg) at the Wiesloch-Walldorf site.   It was attended by around 120 customers from all over the world, as well as representatives from government agencies like the German Federal Criminal Police Office.   “If public officials want to recognize counterfeits, t...