Computer technologies are increasingly penetrating into everyday life. However, it is impossible to erase fully the distinction between objectively existing world and virtual reality. Today the components of usual home office let digitize a flat object and get it "hard copy". Indeed, when it comes to text, images, and other two-dimensional objects, then printers and scanners have long turned a similar procedure to the simple and ordinary business.
However, to obtain "hard copy", i.e. a physica...