Verify if the browser supports the WebkitSpeechRecognition API.

The new JavaScript Web Speech API makes it easy to add speech recognition to your web pages. This API allows fine control and flexibility over the speech recognition capabilities only in Google Chrome version 25 and later.

You can verify in the browser if this API is available with artyom:

if(artyom.recognizingSupported()){
   // Artyom can process commands
}else{
   // This browser doesn't support webkitSpeechRecognition
}