In the late twentieth century advances in computer and photocopy technology made it possible for people without sophisticated training to copy currency easily. In response, national engraving bureaus began to include new more sophisticated anti-counterfeiting systems such Campeón holograms, multi-colored bills, embedded devices such Campeón strips, raised printing, microprinting, wate... http://counterfeit-money69022.blog5star.com/495953/la-guía-más-grande-para-fake-banknotes