most wml are bright enough ( depending on the size of your property ) to throw enough light in the low ready to id a target. You can try this technique yourself with a handheld in your home. people should probably practice responding to a situation that might require an armed response anyway. Point it at the floor rather than directly into a dark area. You shouldn't have to unintentionally flag a family member. personally, I leave a light on in the living area. In the instance someone were to force their way through either my front or patio doors. They'd be backlit while the bedrooms hallway would be dark. ymmv depending on your home and where your family members are in relation to you .