1. A non-contact acquisition and measurement method for identifying moving three-dimensional objects within an identification area, comprising the steps of: (1) detecting the presence of a moving object by scanning said identification area with a first eye-safe laser-camera system, (2) discriminating between an object safe to be identified and an object not to be identified, (3) for an object to be identified, activating a second laser-camera system and determining the speed and position of said object with said second laser-camera system, (4) when said object to be identified reaches a position located in an active measurement area within said identification area, activating a third laser-camera system to acquire range data of said object, and wherein said first eye-safe laser is a Class 1 or Class 1M laser and said second and third lasers are at least Class 2 lasers; wherein discriminating step (2) comprises the substeps of: (2a) comparing consecutively acquired images and changes therein to a set of criteria, wherein said set of criteria define the shapes of moving objects to be identified, and (2b) if said changes do not correspond to any of said criteria, deactivating any active second and third laser-camera system and reverting to step (1).