If you find you’re lending your device to family members or friends, you may want to password-protect files and apps on your device to prevent them from prying into your personal files or opening your personal apps.
Unfortunately, there’s no built-in way to password protect your photos, videos, apps, and files on Android devices. But you can use an app to do this. Today, we’ll show you how to use the free “Private Photo, Video Locker” app (also called “Calculator”) to password protect files and apps on your Android device.
Set The App Password
When the app opens, you’ll be asked to set the app password. Tap “OK” to close the dialog box. Then enter the password using the Calculator once, and then again when asked.
Set a Recovery Email
Next, you’re asked to enter a “Recovery email“. Type in the email address you want to use to recover your password if you forget it, or tap on an email in the “Registered e-mails” list.
Tap the check mark when you’re done.
Password Protect Photos & Videos
You can password protect photos and videos by hiding them in the Calculator app. We’ll show you how to password protect photos, but the procedure is very similar for videos. We’ll point out the differences.
Add Photos To Be Protected
To add photos to be protected in the app, tap the “Pictures” folder on the “Vault” screen. If you’re adding videos, tap the “Videos” folder.
Tap the plus button in the lower-right corner of the screen.
Then, tap “Hide Photos” on the “Import Files” dialog box. If you’ re adding videos, tap “Hide Videos“
The app finds the albums on your device’s internal storage and on your SD card, if there’s one in your device. Tap on the album that contains the photos you want to protect.
The album opens and all the photos in the album display. Tap the photos you want to protect. To select all the photos in the current album, tap the double check marks icon.
To protect the selected photos, tap the lock icon.
Delete The Original Files From The SD Card
If the photos you’re protecting are on the SD card, you have to grant the app permission the first time to delete the files from your device. Tap “Set” on the “Delete the Original Files” dialog box and select the root of your SD card.
To unprotected photos you’ve added to the app, open the “Pictures” folder again on the “Vault” screen in the app. Then, tap the edit button.
To select certain photos to unprotected, tap on them. To protection all the photos in the “Pictures” folder, tap the double-check marks icon.
Then, tap the unlock icon to unprotect the photos.
Choose a Location For The Unprotected Files
The photos you chose to unprotect will be copied to another location on your device. On the “Choose Unhide Folder” dialog box, select the location you want to use.
Once the photos are copied to the unhide folder, they are removed from the “Pictures” folder in the app.
Password Protect Files Of Other Types
You can also password protect files of other types, such as text files or documents (Word or PDF files, for example).
Add Files To Be Protected
To password protect files of other types, open the app and tap the “Files” folder on the “Vault” screen.
Tap the plus button in the lower-right corner of the screen to add files.
On the “Import Files” dialog box, tap “Other Files“.
Choose The Location Of The Files To Be Protected
The “Open From” menu displays, allowing you to choose from the internal storage, the SD card, or other storage options or apps. Select the location where the files you want to protect are stored.
Tap the folder where your files are located.