A few minutes ago Periscope post it a tweet with a new feature for this EXTREMELY popular Social Media App:
On Air Buttons!
“The Periscope On Air Button displays the user’s live status and username. The special thing about the widget is that it comes to life when you’re LIVE!
Clicking the button will open a new window displaying the user’s profile page. If the user is LIVE when the profile page loads, their broadcast will automatically start playing.”
Official Announcement: https://www.periscope.tv/embed