But gadget blog Gizmodo pointed out that he has done numerous announcements and videos from the same seat.
It isn’t clear why Mr Zuckerberg wrapped up his microphone jack with what appears to be either tape or a special plug.
"On mobile, each app really can focus on doing one thing well, we think," he said.
"You're probably messaging people 15, 20 times a day, and having to go into an app and wait for it to load and then go through a bunch of steps to get to your messages or send a message is a lot of friction.
Facebook founder and chief executive Mark Zuckerberg has opened up about the controversial Messenger app, how Hollywood has hurt him and why he wears the same T-shirt every day, in his first-ever Q&A session.
The social network's 1.3bn users were undoubtedly keen to hear Mr Zuckerberg's reasons for forcing them to download a separate app for Messenger, after the messaging function was disabled on the main site.
they just kind of made up a bunch of stuff that I found kind of hurtful.
Mr Zuckerberg is far from the first person to worry about the power of the cameras that are watching us at all times.But that safety measure has been circumvented in the past, and can only be seen when sat in front of the computer – meaning that covering it up with tape is the only way to be entirely sure that it isn't being used to see through.Some had initially suggested that the desk might not be Mr Zuckerberg’s.“I put a piece of tape — I have obviously a laptop, personal laptop — I put a piece of tape over the camera.Because I saw somebody smarter than I am had a piece of tape over their camera." The FBI itself is reported to have used technology that can hack into webcams and allow it to spy on targets.