Keypad Lock Screen WatchDog

Keypad Lock Screen WatchDog isn't just your ordinary everyday lock screen that limits access to your smartphone. No, it goes one step further. In addition to preventing access to your content, the app will send you an email with photos of anyone who tries to unlock your smartphone.

To get started, you have to assign a master password to create the complete restriction. You need to set a four-digit PIN that you'll enter every time to unlock the screen. If someone tries to unlock your screen unsuccessfully, you'll receive an email informing you of the intruder, along with a photo taken with your front camera. This way you'll know instantly who's trying to unlock your device without your permission.

The app also provides the date and time the device was successfully unlocked every time. This means you can analyze the entire list to find out if someone discovered your PIN and accessed your device without you knowing.

If you want to take a break from the complete protection for a period of time, you just have to tap the option to deactivate the app, and you won't have to enter the PIN again until you reactivate it. This is handy for when you're home and there's no risk, as you can easily activate it when you're around friends or strangers.