BungeeAuth, a Two-Factor Authentication plugin for Minecraft BungeeCord.

BungeeAuth is a paid plugin on spigot that you can buy for 10 dollars.
This plugin is for people that need their BungeeCord Network secure, with Two-Factor Authentication.
This plugin works with the Google Authenticator App, so staff can securly login, and if they get hacked, the hackers can't do anything.

Examples of the plugin:

Example 1
Example 2
Example 3
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NTaheij (BungeeAuth)