The Artifact Detector is a parcel extra that can be found in Lego Indiana Jones: The Original Adventures, on the last level of Raiders of the Lost Ark, "Opening the Ark". It shows you the locations of the artifacts, if close enough. Sometimes it even shows you the locations of things that you have to find in order to get a certain artifact, such as on the level "Into the Mountains", right after you come out of the bar there is an artifact you find after finding three snowmen, and with the Artifact Detector on it'll show you where the snowmen are.

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