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The subject matter of this article contains in-development information that was cut from the final version of an official and/or canonical source and appears in no other canonical source. It may also contain incomplete information since not all cut material is publicly known.
The Pulse Shield is a weapon cut from Half-Life 2. The only information known about it comes from an unused HUD texture file named "w_icons3.vtf" located in the folder "materials/sprites" in the Half-Life 2 files. Given its name, it probably was to involve pulse technology.