To log out of Showcase from a web browser:
Click the 'Settings' wheel in the top right corner.
In the popup box, click the 'Main' tab and click 'Log out' next to your name and email address.
Go forth and enjoy everything life has to offer (you can log in again at any time).
To log out of Showcase on your smartphone, tablet, or another device:
Tap the 'Settings' wheel icon in the toolbar at the bottom of your screen.
In the popup box, tap or click 'Log out' beside your email address.
Go get some fresh air! (We'll keep everything safe until you log in again).