Global Roaming or Location Zero?

I’ve been toying with foretitling the sanctuary book “Location Zero” instead of “Global Roaming”. The latter has a hook to it, and implies a strong technology angle, but also suggests the book is about globalization and mobility – which it is, to a degree, but I don’t want that to be the point of it, or to raise those kinds of expectations in potential readers at the expense of the book’s core subject. The former was something that came to me on a flight back to Brussels from London. I don’t remember the stream of consciousness that took me to it, but the conceptual linkages include the obvious patient zero, the index case in any disease control investigation, and Suspect Zero, the 2004 movie built around an intriguing idea but flimsy storyline.