Proceedings of the 1st Workshop on IT Innovations Enabling Seamless and Secure Supply Chains (WITNESS 2011) held in conjunction with the EGOV 2011 Conference, Delft, The Netherlands, August 29, 2011 - Overbeek, Sietse; Tan, Yao-Hua; Zomer, Gerwin (Sun SITE Central Europe, Aachen, Germany, EU, 2011)