Abstract: A system for moving a camera along a predefined path in space, the system comprising: a track (2), the track comprising at least one rail (10, 12); a dolly (4) adapted to ride on the track; and a rack and pinion drive mechanism (6) for driving the dolly along the track. The drive mechanism includes a rack (40) extending along the track and a driven pinion (60) mounted on the dolly, and the rack is positioned vertically inline with the at least one rail of the track.

Abstract: A key management device, comprising a housing member; an access key; a mechanism for locking a key ring to the housing member and releasing the access key when the locking mechanism is in a first position, and for locking the access key to the housing member and releasing the key ring when the locking mechanism is in a second position; wherein the locking mechanism comprises a first member which is movable between the first position in which the key ring is locked to the housing by the first member and the second position in which the key ring is unlocked therefrom, and a second member which is connected to the first member, wherein when the locking mechanism is in the first position the second member releases the access key from the housing member and when the first member is in the second position the second member locks the access key to the housing; and wherein the access key is slidingly received by the housing member and engages with the first member such that insertion of the access key within the hous