Light barrier



A Security System (also called a Door System and a Light barrier) is a hatch that appears in the Metroid Prime 2: Echoes Bonus Disc. It is a white-colored force field with an elaborate design on it consisting of black circle outlines surrounding whole circles, each connected by lines. A larger circular black border surrounds a crimson circle. It is vulnerable to the Dark Beam; once hit, it fades away. There is another one that is completely invulnerable and black in color at the end of the Command Center Access.

In the final game, they are absent.

Scans
"Security Systems active. Dark Beam weapon system required for door access. Energize door with this weapon to open it."

"Door System access denied. Unable to bypass security codes. Seek an alternate exit."