As of May 19, 2020, you can set a password for your browser-version account on FamilyAlbum. If you choose to set a password, you'll only be able to view the album with the correct password, which will increase the security of the album. It's also possible to continue using the browser version without setting a password.
After setting a password and logging in, you won't have to enter your password again for a while if Cookies are enabled on your browser. If you'd like your account to require a password each time you access the album, just clear your browser's Cookies after your session or access the album using secret/incognito mode.