PS4 might have voice recognition.
"The PS4 could have voice recognition when it launches, meaning you just speak to command your console. How do we know this? Sony is looking for a "Speech Recognition Engineering Intern" to work with SCEA (Sony Computer Entertainment America), according to a job advert on LinkedIn, Push Square reports."
"And from the sound of things, Sony is planning to detect your voice over the hubbub of a crowded sitting room."
"The ad says anyone applying will have to help in "speech noise reduction, speech detection, recognition, noisy rejection, and grammar processing under various environments". A key task will be dealing with the "processing of noisy speech with human voice in the background", so you shouldn't need to shush your nan every time you want to use your console in a voice-activated manner."
"Rather than being built into the PS4, the voice recognition capabilities could find their way into the new PlayStation Eye camera for the console. The add-on has previously been rumoured to feature a "four channel microphone array" that would be perfect for picking up your sweet nothings. Microsoft's Kinect lets you control your Xbox 360 by speech, and this feature is sure to play a big role in the Xbox 720 (or whatever Microsoft ends up calling its next console). Sony obviously doesn't want to be left behind."
http://crave.cnet.co.uk/gamesgear/ps4-to-get-voice-recognition-job-ad-suggests-50011253/