Buried in the newly-located Google settings is a curious area called "Smart Lock Passwords." While it doesn't make its function very clear, once you try to sign in with one of the supported apps, it gets much more obvious. Take, for instance, Netflix, one of this feature's launch partners. After signing in as you would normally, Smart Lock will ask if you'd like to store your password for future use.

Now, at this point, you haven't really seen the fun part. Storing passwords is one thing, but making them useful is another. To demonstrate, I uninstalled the Netflix app and then opened it for the first time.