Passwords are, by many accounts, quickly going the way of the dodo. And while many sites now allow users to log in via social media, they're not always a viable option. That's why (as an alternative to logging in via Facebook or Twitter) blog-publishing platform Medium is trying a different tactic: getting rid of passwords entirely. Users will simply click a login button and check their email as Medium sends a single-use, time-limited password link to grant access. It's basically the same process used to reset a forgotten password, save that you won't have to set a new (equally-forgettable) login.