The password field type should be any text-like type in your database. Password field types are automatically created as setters (i.e. they won't display a value). You should use Eloquent mutators in conjunction with a password field to make sure that the supplied password is properly hashed.
'password' => array(
'type' => 'password',
'title' => 'Password',
)
In the edit form, an admin user will be presented with a password input.