With the help of this plugin adds an extra layer after you successfully login to Joomla administration panel.
The user is prompted to remove the screen, which can be disabled by simply entering a PIN code. If the job of admin, then the alarm is turned off.
If you make a mistake several times in a row, or incorrectly entered data in the PIN code, it will start the alarm.
You can also record a list of IP addresses in the file statistics in order properly to exclude them from the system.
Main options: set up time PIN code, the number of attempts to enter the system.
PIN configuration: choose the correct numbers.
Start the alarm: the alarm values clarification.