Password protected decks can only be viewed by your collaborators and people who know the password. The owner and all collaborators will be able to see the deck without having to enter the password, whereas everybody else will have to enter it to see it. Password protection overrides the Public / Private setting on your deck and replaces it with a new Password protected viewing mode.
To set a password, press Edit on an existing presentation or create a new one. Hover over the area in the top left of your screen and press it to access the Manage deck menu. Then, find the Password protection option and press it to set your password.
Enter the password you’d like your deck to be protected by. You can change this password any time. All of your collaborators (with edit permissions) can see the password to the deck. They can also change the current password or add a new one.
After you’ve set it, each person accessing your deck will have to enter the password to access the presentation. You won't see this screen and those with edit permissions won't either. To test that password protection works, open the presentation in an incognito browser tab or log out of Swipe and then go to the presentation link.
To remove password protection, head back to the Edit mode of the deck, press Password protection in the Manage deck toolbar, click the password field and press Remove password.