Ionic 2 Hands-Free Voice Activation

Hello guys,

I’ve been trying to create a “Google Now” & “Dragon - Personal Assitant” clone for a project. Creating a button to listen to the user doesn’t seem too much of a problem. However, I don’t know how to create “hands-free voice activation” like how Google Now has it. You are able to say “Ok Google” instead of pressing the mic button for the app to listen to you.

Is there a way to pull this off in Ionic?