![Screenshot of a Peertube video page, with a chat on the right. At the bottom of the chat, there is a "{{% livechat_label login_using_external_account %}}" button.](/peertube-plugin-livechat/images/external_login_button.png?classes=shadow,border&height=200px "{{% livechat_label login_using_external_account %}} button")
By enabling this option, the moderation bot will automatically delete messages containing more than X special characters. Special characters are those that don't fit into one of these categories: letters, numbers, punctuation symbols, currency symbols, emojis.
![Screenshot of a dialog with an "OpenID Connect" button.](/peertube-plugin-livechat/images/external_login_dialog_oidc.png?classes=shadow,border&height=200px "External login dialog - OpenID Connect")
By enabling this options, the moderation bot will automatically moderate duplicate messages. That means if a user send the same message twice within X seconds, the second message will be deleted.
To enable this feature, first you have to create a client on your provider side (check the related documentation for enabling OpenID Connect).Then go to the [plugin settings](/peertube-plugin-livechat/documentation/admin/settings), and enable "{{% livechat_label external_auth_custom_oidc_label %}}".