ESRB writes "North Korea is apparently able to produce high-quality counterfeits of U.S. dollars — specifically $100 and $50 bills. It's suspected that they possess similar printing technologies as the U.S. and buy ink from the same Swedish firm. 'Since the superdollars were first detected about a decade ago, the regime has been pocketing an estimated $15 to $25 million a year from them. (Other estimates are much higher — up to several hundred million dollars' worth.)' The article also advocates a move to all-digital payment/transfers by pointing out both forms are only representations of value and noting it would cripple criminal operations such as drug cartels, human traffickers, and so forth."