Now this sounds familiar. Majesco just announced that it's publishing an augmented-reality game for a Nintendo handheld, to be released around Halloween, that allows you to search for ghostly phenomena in your environment using the system's camera.
No, it's not the DSi game Ghostwire, whose developer is still seeking a publisher after splitting with Majesco. The new game is The Hidden, created by 1st Playable Productions, and coming this October to 3DS.
The Hidden puts the player in the role of a member of the Ghostly Entity Investigation and Strike Team (G.E.I.S.T.), hunting around the real world to find spectral creatures, and then "using a full arsenal of high tech tools and upgradeable weapons, including the Plasmatic Disruptor, Ectoplasm Sensor and Spectral Shield" to defeat them.