Wopisanje
THE MOST UNIQUE TWO-FACTOR AUTHENTICATION METHOD
This plugin gives you the ability to turn any file on your computer into a unique key which you will use to access the admin area.
The plugin only works using HTTPS!
Properties
- File is not downloaded or stored physically on the site.
- The plugin does not create additional security risks.
- Plugin code does not create additional load on the site.
- Intuitive interface.
- Provides the maximum level of protection against brute force attacks. Even if a hacker has access to your computer, it will be extremely difficult for him to guess which file is the key.
- Any file can be used as a key, for example: photo, video, text document, song, operating system system file, whatever…
- File size up to 1 GB.
- Limit Login Attempts.
- Disable XML-RPC.
Keep in mind that if you change the contents of the file selected as a key, you will not be able to access the admin area.
Screenshots
This is what the login page will look like 
This is how the section in the profile settings will look like 
2FA Settings page
FAQ
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Where are the settings?
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Settings are located in the edit section of your profile
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What should I do if I have lost my key file?
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If you are not an administrator.
Ask your site administrator to turn off two-factor authentication for your profile. After that, you will be able to log in using only your login and password, and then select a new file.If you are administrator.
* Go to your website database.
* Find usermeta table.
* Find the row where ‚user_id‘ = your user ID, and ‚meta_key‘ = ‚senpai_software_2fa_status‘.
* Change the value of the ‚meta_value‘ field to ‚disable‘.
* Now you can use only login and password, and then choose a new key file.
Reviews
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Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
2.0.1
- Added namespace
2.0.0
- Added ability to disable XML-RPC.
- Added ability to set restrictions for login attempts.
1.0.2
- Misc: Add deactivation function.
1.0.1
- Bug Fix: Fixed an issue where an admin couldn’t change another user’s settings.
- Misc: Replaced wp_hash with sha1.
1.0
- Release this plugin to the masses!