This invention provides a fixed or portable non-lethal laser security device and method for use of such device as a non-damaging weapon and security system to provide warning and visual impairment upon an intruder. At a predetermined laser wavelength and intensity, this invention utilizes laser light in the visible portion of the wavelength spectrum to create temporary visual impairment, hesitation, delay, distraction, and reductions in combat and functional effectiveness through the effects of glare, flashblind, and psychological impact. The device should have a housing structure to protect the internal components from damage or destruction, the ability to produce and transmit visible laser light over various wavelengths and intensities, a power source to drive the laser light, a collimating lens to focus the laser light, and should couple and communicate with an existing security device.