@Said Saddouk - There are no customizable object-level permissions. Probably your only (out of the box) workaround would be to embed a password-protected board into the main game board.
And, of course, if a Wish List idea doesn’t already exist, I would suggest creating one and sharing a link back here for upvoting 
@Said Saddouk - There are no object-level permissions. Probably your only (out of the box) workaround would be to embed a password-protected board into the main game board.
And, of course, if a Wish List idea doesn’t already exist, I would suggest creating one and sharing a link back here for upvoting 
I already tried this out and embed an password-protected iframe to another board. It would probably work with a hand full of participants. But creating 20 password-protected boards would end up in chaos!
Especialy if all players share the same card-deck.
I also played around with breakout-frames.
I know, that there is no such built-in feature in miro. But maybe we can find a decent and fun way to solve this with (a combination of) some built-in features. Any idea would be helpful. 