It would be nice for voice recognition platforms to start being built in. I know there's training data that's needed, but there's some convenience afforded.
The privacy concern _isn't_ necessarily about having something to hide. It's about the consistent hacking of major systems, and exposure of personal data.
Historically probably wasn't much of an issue but given that most people will spend hours at a desk on a keyboard, it's likely to become more of a problem. Think of it akin to paying attention to your posture
Real easy to say: "Okay Google... navigate to California Academy of Sciences."
What's missing for me is spotify/app specific integration.
For that to really happen in a robust way, I think Google needs to open up Custom Voice Actions.
[0] https://developers.google.com/voice-actions/custom-actions
I agree discovery of these magic phrases needs work.
Okay Google... Play music will start Music app Okay Google... Start Radio will start NPR app
Perhaps if I used Google Music the integration would be built out.
The iPhone is catching up fast too...my wife's taken to sending emails via Siri (to avoid strain on her hands), and most of the time it gets things perfectly.
The biggest problem is privacy. One of the nice things about touchscreens is that you have a personal dialog with the device that can't be overheard by anyone nearby. That doesn't apply to voice recognition systems, and it can be pretty awkward to dictate an e-mail to a phone in a crowded place.