1.protect your personal photos with password.
2.long click the photo to set tag to every photo.
IMPORTANT: hit menu to import photos and set password in preference.
It is easy to use and it is FREE!
Ps: If you want to import lots of photos in one time without import them one by one please purchase the paid version of PhotoGuard.
And sure the paid version does not have ads.
Just enjoy it.
If any question, bug or suggestions please email me.