WiFi Roaming: Legal Implications and Security Constraints. - Romain Robert; Mark Manulis; Florence De Villenfagne; Damien Leroy; Julien Jost; François Koeune; Caroline Ker; Jean-Marc Dinant; Yves Poullet; Olivier Bonaventure; Jean-Jacques Quisquater (Int. J. Law Inf. Technol., 2008)