A device for processing valuables (L) for an installation for processing valuables (L) in which at least the following entities are present: an operator (OP) and a valuable (L), characterized by the fact that it includes: - at least one 3D camera configured to spatially capture images of said installation in its field, including images of said entities (OP; L), whether these entities are static or in motion; - at least one automatic detection and analysis algorithm which, based on images captured by said at least one camera, is configured firstly to recognize and identify the successive positions of said entities (OP ; L) on the images and, moreover, to determine the possible interactions between said entities (OP ; L), these positions and interactions constituting "actions to be validated"; - at least one supervision algorithm which, based on, firstly, the results of said at least one automatic detection and analysis algorithm and, secondly, rules defining unauthorized actions, is able to determine whether or not the "actions to be validated" are authorized; - at least one interface comprising at least one alarm tool which is triggered due to an alarm reason, namely when at least one sequence of images presents a situation allowing the aforementioned algorithms to recognize that at least one "action to be validated" is an unauthorized action, said valuables being chosen from the list consisting of banknotes and other secure documents such as passports or visas, at all their stages of manufacture, i.e. during manufacture or after it, luxury fragrances, precious stones, jewelry, electronic components, valuable technological items, as well as sets of the preceding items and the receptacles of the preceding items, and said unauthorized actions being chosen from the following list: valuable (L) non-visible before being placed in a container (R), said operator (OP) is momentarily non-visible in the installation, handling time of said valuable (L) exceeded, valuable (L) picked up again when it has already been handled and set down, operator (OP) bringing his non-empty hands (M1 ; M2) out of the installation or out of a container (R), operator (OP) inserting his hands (M1 ; M2) into a full container (R), the valuable (L) leaving a defined area, more than a defined number of valuables (L) are handled simultaneously, in particular more than one, the number of valuables (L) in the container differs from, and in particular exceeds, a predefined value, the valuable (L) does not come from an arrival area, the container is moved when it is not full. - at least one 3D camera configured to spatially capture images of said installation in its field, including images of said entities (OP; L), whether these entities are static or in motion; - at least one automatic detection and analysis algorithm which, based on images captured by said at least one camera, is configured firstly to recognize and identify the successive positions of said entities (OP ; L) on the images and, moreover, to determine the possible interactions between said entities (OP ; L), these positions and interactions constituting "actions to be validated"; - at least one supervision algorithm which, based on, firstly, the results of said at least one automatic detection and analysis algorithm and, secondly, rules defining unauthorized actions, is able to determine whether or not the "actions to be validated" are authorized; - at least one interface comprising at least one alarm tool which is triggered due to an alarm reason, namely when at least one sequence of images presents a situation allowing the aforementioned algorithms to recognize that at least one "action to be validated" is an unauthorized action, <EOS>