Allows you to create a different encryption password for booting your device than unlocking your screen. This allows you to have a stronger device encryption password (which you only need to enter once after booting your device) and a simpler pattern/PIN/password for unlocking your screen.
If an 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.
Root privileges required.
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.Download F-Droid