You have the option to display your active galleries on your homepage, and also a Find My Photos form. The Find My Photos for allows visitors to enter in their gallery password or photos passcodes to access their photos without having to navigate to a gallery.
How To:
Site Content -> Manage Homepage. Under the standard page text editor, click the Featured Content / Gallery option. There you can select which section or sections to display galleries from.
Click the Find My Photos option for that option and check "Add find my photos form".
