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Laser Induced Plasma Channel (LIPC) technology has already been used for a Portal Denial System. The system is designed to be installed as a corridor or passageway denial system that can be employed at either indoor or outdoor locations and can be configured for each individual installation’s security requirement. The system creates a laser guided electric barrier that can be initiated either automatically from an existing customer-supplied computer system that identifies the authorization of the person (similar to conventional keyless entry systems) or via operator command. The system is designed to stop intruders in a passageway or at a vehicle check point, with a lethal or non-lethal electrical discharge.
Originally posted by WestPoint23
I always though that if you had a laser powerful enough to burn just about anything it touched, and if you could somehow fan out its beam you could have a sort of screen.