Money, violence, indiscretion: the motivation for any person who wants to disappear, either physically or digitally, usually wends back to one of these. Whatever the reason and whatever the scale of the ambition – from starting a new life in a foreign country to scrubbing one’s name and address from the phonebook – it has never been harder to vanish. In a world where almost any action outside your garden shed leaves some kind of digital footprint, there is no clear path back to the realm of the unknown.