diff --git a/auth_user_insensitive/README.rst b/auth_user_insensitive/README.rst
index 4fe0046c4..2e3d450ad 100644
--- a/auth_user_insensitive/README.rst
+++ b/auth_user_insensitive/README.rst
@@ -1,6 +1,6 @@
-.. image:: https://img.shields.io/badge/licence-AGPL--3-blue.svg
-   :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
-   :alt: License: AGPL-3
+.. image:: https://img.shields.io/badge/licence-LGPL--3-blue.svg
+   :target: http://www.gnu.org/licenses/lgpl-3.0-standalone.html
+   :alt: License: LGPL-3
 
 =======================
 Case Insensitive Logins
@@ -38,8 +38,6 @@ Contributors
 * Dave Lasley <dave@laslabs.com>
 * Ted Salmon <tsalmon@laslabs.com>
 
-
-
 Maintainer
 ----------
 
diff --git a/auth_user_insensitive/__init__.py b/auth_user_insensitive/__init__.py
index 1bfd9cc43..1fc495145 100644
--- a/auth_user_insensitive/__init__.py
+++ b/auth_user_insensitive/__init__.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015-2017 LasLabs Inc.
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
 
 from . import models
+from .hooks import pre_init_hook_login_check
+from .hooks import post_init_hook_login_convert
diff --git a/auth_user_insensitive/__manifest__.py b/auth_user_insensitive/__manifest__.py
index d6863109e..be2d7a0b7 100644
--- a/auth_user_insensitive/__manifest__.py
+++ b/auth_user_insensitive/__manifest__.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015-2017 LasLabs Inc.
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
 {
     "name": "Case Insensitive Logins",
     "summary": "Makes the user login field case insensitive",
@@ -14,5 +14,6 @@
     "depends": [
         "mail",
     ],
-    "data": [],
+    'pre_init_hook': 'pre_init_hook_login_check',
+    'post_init_hook': 'post_init_hook_login_convert',
 }
diff --git a/auth_user_insensitive/hooks.py b/auth_user_insensitive/hooks.py
new file mode 100644
index 000000000..330ecac88
--- /dev/null
+++ b/auth_user_insensitive/hooks.py
@@ -0,0 +1,36 @@
+# -*- coding: utf-8 -*-
+# Copyright 2017 LasLabs Inc.
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl).
+
+from odoo import _
+from odoo.exceptions import ValidationError
+
+
+def pre_init_hook_login_check(cr):
+    """This hook will look to see if any conflicting logins exist before
+    the module is installed
+    :param openerp.sql_db.Cursor cr:
+        Database cursor.
+    """
+    with cr.savepoint():
+        users = []
+        cr.execute("SELECT login FROM res_users")
+        for user in cr.fetchall():
+            login = user[0].lower()
+            if login not in users:
+                users.append(login)
+            else:
+                raise ValidationError(
+                    _('Conflicting user logins exist for `%s`' % login)
+                )
+
+
+def post_init_hook_login_convert(cr, registry):
+    """After the module is installed, set all logins to lowercase
+    :param openerp.sql_db.Cursor cr:
+        Database cursor.
+    :param openerp.modules.registry.RegistryManager registry:
+        Database registry, using v7 api.
+    """
+    with cr.savepoint():
+        cr.execute("UPDATE res_users SET login=lower(login)")
diff --git a/auth_user_insensitive/models/__init__.py b/auth_user_insensitive/models/__init__.py
index dbdca428b..ee30f654a 100644
--- a/auth_user_insensitive/models/__init__.py
+++ b/auth_user_insensitive/models/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015-2017 LasLabs Inc.
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
 
 from . import res_users
diff --git a/auth_user_insensitive/models/res_users.py b/auth_user_insensitive/models/res_users.py
index 6e4fcd4a1..5ec8cf817 100644
--- a/auth_user_insensitive/models/res_users.py
+++ b/auth_user_insensitive/models/res_users.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015-2017 LasLabs Inc.
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
 
 from odoo import api, fields, models
 
@@ -10,9 +10,6 @@ class ResUsers(models.Model):
     _inherit = 'res.users'
 
     login = fields.Char(
-        'Login',
-        size=64,
-        required=True,
         help='Used to log into the system. Case insensitive.',
     )
 
@@ -28,13 +25,13 @@ class ResUsers(models.Model):
         return super(ResUsers, self).search(domain, *args, **kwargs)
 
     @api.model
-    def create(self, vals, ):
+    def create(self, vals):
         """ Overload create to lowercase login """
         vals['login'] = vals.get('login', '').lower()
         return super(ResUsers, self).create(vals)
 
     @api.multi
-    def write(self, vals, ):
+    def write(self, vals):
         """ Overload write to lowercase login """
         if vals.get('login'):
             vals['login'] = vals['login'].lower()
diff --git a/auth_user_insensitive/tests/__init__.py b/auth_user_insensitive/tests/__init__.py
index b25ca249c..ea6bf27c9 100644
--- a/auth_user_insensitive/tests/__init__.py
+++ b/auth_user_insensitive/tests/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015-2017 LasLabs Inc.
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
 
 from . import test_res_users
diff --git a/auth_user_insensitive/tests/test_res_users.py b/auth_user_insensitive/tests/test_res_users.py
index f3c94b67f..31f28c1e5 100644
--- a/auth_user_insensitive/tests/test_res_users.py
+++ b/auth_user_insensitive/tests/test_res_users.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2015-2017 LasLabs Inc.
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl.html).
 
 from odoo.tests.common import TransactionCase