Authentication Code
Authentication Code is a lightweight plugin which will add an authentication field to your login form for better security.
Consider an alternative
Authentication Code shows warning signs in 2026 — compare the alternatives below before installing. It runs on 80+ sites, is rated 5/5 and was last updated 10 years ago, and scores 32/100 on our health check.
- Small user base (80+ active installs)
- Very few reviews so far
- No update in 9 years
- Only tested up to WordPress 4.7 (latest is 7.1)
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Authentication Code stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| authentication code | >100 |
| authorization code | >100 |
| code | >100 |
| pin | >100 |
| pin code | >100 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 5 from 1 reviews
About Authentication Code
From the official readme · v1.2.1Description
Authentication Code is a lightweight plugin which will add an authentication field to your login form for better security.
No access will be granted when the authentication code is invalid or empty. Leave the authentication code field blank to disable the feature.
All users will have to know what the authentication code is in order to login to your website. This plugin is perfect for private companies or solo webmasters.
Installation
- Go to Plugins > Add New.
- Search for Authentication Code.
- Look for this plugin, download and activate it.
- Go to Tools > Authentication Code and enter your desired code.
Changelog
Fixes an important user-reported bug, we recommend updating your plugin immediately.
1.2.1
- Fixed an security vulnerability regarding
target="_blank"(read more) - Added support for WordPress 4.7
- Added uninstall.php and removed uninstall scripts from the main file
1.2.0
- Global update, added new systems
1.0.1
- Fixes an important user-reported bug.
1.0
- Initial release.
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
FAQ
Authentication Code: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Sep 29, 2026
Is Authentication Code free?
Yes. Authentication Code is free to download and use from the official WordPress.org plugin directory.
Is Authentication Code safe to use in 2026?
Authentication Code shows warning signs in 2026 — compare the alternatives below before installing. It runs on 80+ sites, is rated 5/5 and was last updated 10 years ago, and scores 32/100 on our health check.
How many websites use Authentication Code?
Authentication Code is active on 80+ WordPress websites and has been downloaded 7,528 times since it launched in July 2016. It was downloaded 165 times in the last 30 days.
Does Authentication Code work with WordPress 7.1?
Authentication Code is officially tested up to WordPress 4.7.37, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
When was Authentication Code last updated?
The latest version, 1.2.1, was released on November 1, 2016 (10 years ago).
Who makes Authentication Code?
Authentication Code is developed and maintained by Mitch.
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