A security code is provided having a diffractive holographic code of a quick response type, a data-matrix two-dimensional code or other bar code types, formed by a metalized foil with the code embossed thereon. The diffractive holographic code is covered by layers of synthetic DNA and nanoparticles of highly variable properties. The imprinted layer of synthetic DNA and the imprinted layer of synthetic nanoparticles, are covered by a top layer formed of a protective transparent foil.