Please follow the steps below to make your albums private. Your customers will only see a password box where they can enter the password for their album to continue.
1. Login to control panel.
2. Click on Manage Albums
3. From the "Album Settings" dropdown, select "Other proofing settings"
4. Go to option 5 "Proofing section home page" and enable the option "Only show a password box to customers"
To enable this option all of your online albums must have unique passwords.