It sounds like it is more of a warning "you are in our way" device? "For long-distance hail and warning, especially during maritime security, the GLARE® LA-9/P combines a powerful green beam with Eye Safe® technology. The laser rapidly determines if an unintended observer is within the nominal ocular hazard distance (NOHD) and immediately shuts off the glaring output to prevent accidental eye injury. Once the bystander has moved out of the NOHD, the laser output instantly resumes."