Whether a law enforcement officer's warrantless insertion of keys into a locked apartment door, within a secured multi-unit dwelling, to gain information that was unavailable to the naked eye is an unreasonable search.

Whether the Third Circuit's rule limiting parties to the precise arguments raised in the district court directly conflicts with this Court's traditional rule that parties are not limited to the precise arguments made below but can make any argument in support of a claim that was properly presented.

Whether a law enforcement officer's warrantless insertion of keys into a locked apartment door, within a secured multi-unit dwelling, to gain information that was unavailable to the naked eye is an unreasonable search