Well...I don't know why he would want to, but unless he's told not to I suppose he could.
But...
also...
Now, no one asks for permission to videotape with a normal videocamera. But it's obvious that you're in the region of someone filming. With glass it isn't. Especially if you've never seen them. So he'll be able to get a lot closer to people, without them being aware that he's filming, than usual. That can feel rude to people.
And once they notice...
That means when people notice they will be asking. Does he want to spend his entire vacation with that conversation?
I was in line with someone at Walgreens and noticed his. He's just standing there, buying cotton balls, and has to get into yet another conversation about them. Of course, our conversation started when I noticed his awesome and fun
Lego stud post earrings, which is when he turned around and I saw his face. Cue conversation about TWO things he's wearing on his head.
I personally would grow weary of this. Then again, I don't videotape things in the parks. I take still pictures. With my very obvious camera that people can notice and stop walking if they don't want to be in the picture.