SnooperStopper

SnooperStopper allows you to have different device encryption password than screen unlock pattern/PIN/password. You can have strong device encryption password (which you only need to enter once after booting your device) but simple pattern/PIN/password for unlocking your screen.

If attacker tries to guess your simple pattern/PIN/password, he has only few tries (default is 3) after which the device is rebooted and he needs to enter your strong device encryption password again.

This app uses the Device Administrator permission. You also need root access.

Why is it needed:

Android always sets device encryption password same as screen unlock pattern/PIN/password. This is very unfortunate, because you should have encryption password as strong as possible, but nobody wants to enter long password all the time just to unlock screen.

There is Android issue #29468 requesting different passwords for encryption and screen lock, but it seems to be ignored by Google (it is there from 2012 and recently marked Obsolete by Google).

How to use it:

After installation, start SnooperStopper and grant it superuser permissions. Then enable device admin in app, which allows SnooperStopper to monitor failed screen unlock attempts and reboot device if maximum number is exceeded.

Whenever you change your screen unlock pattern/PIN/password, Android also changes your device encryption password, so you have to set your strong encryption password again. SnooperStopper automatically opens window where you can change it right after you change your screen unlock pattern/PIN/password, so you should never forget about it.

Requirements:

You must have enabled device encryption (SettingsSecurityEncrypt phone) and your device has to be rooted (Android doesn't allow apps to change device encryption password or reboot your device without root access).

Credits:

Whole device encryption password changing code is taken from Nikolay Elenkov's Cryptfs Password Manager.
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3.8
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What's New

- support for Android 6
- support for CyanogenMod 13
- shutdown instead of reboot after too many failed unlock attempts
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Additional Information

Updated
March 21, 2016
Size
1.4M
Installs
1,000+
Current Version
1.3
Requires Android
4.1 and up
Content Rating
Everyone
Permissions
Offered By
Michal Křenek
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