The app has the option to confirm moves for Live chess but not the website.
Live Chess - How to Accept Move

Interesting. Yes, now that you mention it that's where I've seen it. I guess it's too hard to program on the website, or maybe I'm the first who has asked for it so they didn't even consider it.

I'm sure you are not the first but I'm guessing that the touch interface has a larger problem with mistaken moves so the option is more valuable on mobile, even with the time trade-off.
I like it in Daily, since it is easy to forget you are not in an analysis board sometimes. Have had a few times it would have been nice in live but the loss of time wouldn't really be worth it for me most of the games
Today I was playing an opponent in Live Chess, and he made a mistake allowing me to win a pawn. But when I made my move, the server left my piece on the wrong square, and my opponent naturally took the free piece and the free win. I seem to recall a setting where you get the opportunity to accept a move before the server accepts it, but I can't find the setting.
Help!