This post is right about one thing: Speech recognition technology is good at context-specific recognition, i.e. with a small grammar, as in VoiceXML IVR applica

This post is right about one thing: Speech recognition technology is good at context-specific recognition, i.e. with a small grammar, as in VoiceXML IVR applications (anyone else remember those?). This has been true on typical PC hardware since at least 2000, so it should be easy to run that kind of speech recognition locally on a smartphone. But, last time I did anything serious with that kind of speech recognition, it still required a push-to-talk button or the like. Maybe a trigger phrase would work now.