Some ideas are undeniably sensible, and zero-click WiFi roaming across carriers and countries is one of them. That's why iPass has set itself the unenviable but likely profitable task of convincing global telecoms giants to overlook their differences and form an "Open Mobile Exchange" based on its cloud-based authentication technology. It won't be the first to embark on such a voyage of persuasion: Skype is already on the case and Boingo is too (at least, sort of), but there are still plenty of fragmented hotspot serv
