It's an interesting principle, but it should be advertised as iPhone only and even that may be
misleading, according to a question on the discussion section. There is also the question of
cleaning up, which I have raised in the discussion section, without and answer up to now. This is
valid for a borrowed phone, of course you could do it safely on your own phone, but that gets
suspicious, I can do an app to do the same and much more.