On the login screen you can always choose to enter your password and bypass the fingerprint.
To access your phone you will likely need to purchase an adapter to allow you to connect to a mouse and an hdmi cable for external monitor. I had to do this with an s4 and it worked great.
I updated today to MK2 and now my s-voice doesn't work. It just says "Sorry, something went wrong with the server. Please try again." I have restarted the phone and still has the issue. My phone is not rooted. Anybody else with this problem?