Saud

This plugin help you to choose a custom user field to allow users to login by this custom field instead of username or email on login page. This is helpful for your if you have a custom user field for Mobile number for example. or ID number for the citizens.
Major features in ACF Login include:
<ul>
<li>Choosing a custom field to be used instead of Username/Email for login page.</li>
</ul>
<h3>Uninstall</h3>
If in any case you need to rollback and remove the custom field login, you can just delete the selected custom field login by executing this command: <code>wp option update acf_login_field</code> 
Or just simply deactivate the whole plugin: <code>wp plugin deactivate acf-login</code>

Advanced Custom Fields: Login

This plugin help you to choose a custom user field to allow users to login by this custom field instead of username or email on login page.

John Huebner

Warning: Support for Sub Fields Removed as of Version 4.0.0
This is an add on plugin for Advanced Custom Fields (ACF) Version 5.
This plugin will not provide any functionality if ACF5 is not installed.
This plugin adds a field setting to all field types so that user roles allowed to edit the field can 
be selected. Only those roles selected for the field will be able to edit the field.
<h3>Github Repository</h3>
This plugin is also on GitHub 
<a href="https://github.com/Hube2/acf-user-role-field-setting" rel="nofollow ugc">https://github.com/Hube2/acf-user-role-field-setting</a>
<h3>Excluded Field Types</h3>
Most of the time it would not make sense for a tab field, unless all of the fields in the tab were set the same, in other words, removing a tab should remove all the fields in that tab. That’s not something that I can do at this point.
I’m not sure about the clone field, I haven’t worked with it much. You can test it out if you want.
I have also removed support for repeater, group and flexible content fields because I cannot preserver the values of these fields if they are not editable in the ACF interface. Please note that I do not know what the effect of allowing user role settings on these fields will be.
There is a filter so that you can adjust the types of fields that are excluded. Here is an example
<pre><code><?php 

 add_filter('acf/user_role_setting/exclude_field_types', 'user_role_setting_excluded_field_types');
 function user_role_setting_excluded_field_types($exclude) {
 /* 
 $exclude holds an array of field types to exclude from adding user role settings
 default value:
 $exclude = array('tab' => 'tab', 'clone' => 'clone');
 */

 // remove tab field from exclude
 if (isset($exclude['tab'])) {
 unset($exclude['tab']);
 }

 // add message field to exclude
 $exclude['message'] = 'message';

 return $exclude;
 }

?>
</code></pre>

Advanced Custom Fields: Login vs ACF User Role Field Setting