I. Introduction
The advent of additive manufacturing allows to print 3D objects just owing a blueprint and a 3D printer. As a result, 3D printing could give a rise to mass production of counterfeit products at reduced pricing [1]. The problem is not limited only to counterfeit items, but there is also a necessity to detect printing of objects (hereafter called controlled objects, COs) that potentially infringe upon laws, authorship rights, legal or other constraints. This cybersecurity challenge is yet to be addressed by industry. Legislative bodies are enacting new laws [2, 3], and are trying to better regulate the 3D printing of controlled items.