It’s surprisingly easy to share two factor authentication among your peers (depending on your definition of ‘easy’). You’ll need just a little work on the command line to prove that any of you are, in fact, you.
Any integration done well enough is sufficiently close to magic. With
apologies to Isaac Asimov. In this article, i’m stunned by the ease of
creating an ebook from a web page to an iPad with precisely two commands.