AUTH_USER_MODEL = 'app_name.MyUUIDModel'
 # REMOVE ALL PASSWORD Validators

def create_user(self, uuid):
    user = self.model(
        uuid=self.normalize_email(email),
    )
    user.set_password(None)
    user.save(using=self._db)
    return user

def create_superuser(self, uuid):
    user = self.create_user(uuid)
    user.save(using=self._db)
    return user

def get_by_natural_key(self, email):
    return self.get(**{self.model.USERNAME_FIELD: email})

 class MyUUIDModel(AbstractBaseUser):
       uuid = models.CharField(max_length=36, unique=True)
       USERNAME_FIELD = 'uuid'
       objects = UUIDModelManager()
       def save(self, *args, **kwargs):
           super(MyUUIDModel, self).save(*args, **kwargs)

AUTHENTICATION_BACKENDS = [
  'django.contrib.auth.backends.ModelBackend',
  'app_name.auth.MyAuth'
]

class MyBackend(object):
    def authenticate(self, username=None, password=None):

        # Check if username i.e. UUID exists
        return