Digital DIY makes it much easier for everybody to produce physical objects of all kinds. Such a capability brings considerable challenges to our current ethical and legal systems, and to our very idea of what is (or should be) right or wrong: what happens when virtually everybody can copy objects of design, self-produce spare parts for products she already owns, or manufacture dangerous ones?
New South Wales (Australia) recently enacted a new legislation to regulate gun control with the Firearms and Weapons Prohibition Legislation Amendment Bill 2015. It is the first of its kind in that it tries to control digital fabrication of firearms, it aims: "to create a new offence of possessing digital blueprints for the manufacture of firearms on 3D printers or electronic milling machines". Source (PDF)
Digital Do It Yourself (DiDIY) techniques allow people, not necessarily specialised in the art, to reproduce complex objects with relative ease and low cost. DigitalDIY brings together the physical and the digital realm such as in 3D printers and scanners or networks of sensors and actuators (the "Internet of Things", IoT). This provides tremendous benefits for society at large in various ways: