Twitter has started rolling out a Periscope button to users on Android and iOS, allowing them to start broadcasting live on a whim.
When writing a tweet, you'll see a "Live" button, which acts as a shortcut to launch the Periscope app and start a live broadcast. If you don't have the Periscope app already, you'll be brought directly to the store to download it.
Twitter owns Periscope, hence the in-app compatibility. This "Live" button was previously tested in May with selected users, but it will soon be available to all mobile users. A brief tweet from Twitter's account gives you an idea of what you need to keep an eye out for if you want to go live with your thoughts.