The pen has an iodine solution that reacts with the starch observed over the wood-centered paper utilized to make fake bills. When utilized on a fake bill, the answer discolors it. The iodine solution doesn’t respond with reliable bills as these are typically designed with fiber-based paper. The texture in https://zionlnnon.webbuzzfeed.com/34805272/copyright-1-dollar-billsus-code-copyright-money-an-overview