The SKS system will detect keys left contained in the car when powered-off, and is not going to allow the car to be locked in this example. I also purchased every Drake (most popular battle-cruiser at the time) in a three system radius. http://ifpte12.com/__media__/js/netsoltrademark.php?d=products-dd.com%2F%25E0%25B8%25AB%25E0%25B8%25A1%25E0%25B9%2589%25E0%25B8%25AD%25E0%25B8%2597%25E0%25B8%25AD%25E0%25B8%2594%25E0%25B9%2584%25E0%25B8%25A3%25E0%25B9%2589%25E0%25B8%2599%25E0%25B9%2589%25E0%25B8%25B3%25E0%25B8%25A1%25E0%25B8%25B1%25E0%25B8%2599%2F%25E0%25B8%25AB%25E0%25B8%25A1%25E0%25B9%2589%25E0%25B8%25AD%25E0%25B8%2597%25E0%25B8%25AD%25E0%25B8%2594%25E0%25B9%2584%25E0%25B8%25A3%25E0%25B9%2589%25E0%25B8%2599%25E0%25B9%2589%25E0