A Shield Key is an item in Metroid Prime Hunters. When certain tasks such as solving puzzles, destroying Guardians or defeating Bounty Hunters for the first time are completed, a Shield Key can be obtained. They normally unlock doors or Artifact Shields. Three Shield Keys are needed to obtain all three Alimbic Artifacts, and activate the Stronghold Portal that will take Samus to the Stronghold Void on the planet/space station she is currently on. There are a total of six per location (as the sequence must be repeated twice on each location), with a grand total of twenty-four in the game.
Metroid Prime Hunters
When retrieved, this dynamic piece of technology will deactivate the ARTIFACT SHIELD in this area.