IEEE Transactions on Industrial Informatics Special Section on Wireless Technology in Factory and Industrial Automation vol. 3, no. 2, May 2007 and vol.3, no. 3, August 2007 Organizers and Guest Editors: Andreas Willig, Technical University of Berlin; Elisabeth Uhlemann, Halmstad University, Sweden; Stefano Vitturi, Italian National Council of Research, IEIIT-CNR and University of Padova, Italy; Daniele Miorandi, CREATE-NET, Italy   Guest Editorial:  Part 1 (vol. 3, no. 2, May 2007); Part 2 (vol.3, no. 3, August 2007) Contents: Part 1 (vol. 3, no. 2, May 2007); Part 2 (vol.3, no. 3, August 2007)