It seems that the only way to turn the PS4 Camera’s microphone off is to physically unplug the device – there’s no option to stop your voice being broadcast in-game if the camera is plugged in unless you turn on a headset and mute that, or join a party chat with no other players.
This is according to a poster on NeoGAF, who states “I was playing FIFA yesterday and after a few games I noticed the little speaker icon glowing during my matches, indicating that I was chatting online with the other player.”
“Well turns out the PS4 camera automatically broadcasts in game chat with no way to mute or turn this feature off. Yes, I even checked with Sony and the representative confirmed that there was no way to turn it off, short of unplugging the camera.”
A few other users back it up within the thread, so it’s a real issue. It’s really just an oversight, but a bad one at that, which almost mimics Microsoft’s “always on” Kinect policies which they backtracked on earlier this year.
Hopefully there’s a patch to fix this before the UK launch on November 29th.