There is a secret service website called know your money and also US currency.gov they have courses that are free. However, the new one that just came out is able to go through these machines I'm sure that they'll have to update these site soon because people are getting clever and clever every day. If I find one I will post it But it might not be any different than the current $100 bill because apparently it's the watermaek or color/ink isn't being detected by the machines allowing it to pass being authentic. If I find anything more out or a friend tells me I'll let you know




















