SIOUX FALLS, S.D. -- It didn't take special training for workers in South Dakota to spot the fake $20 bills that were being passed off as real money this week. Police said the phony bills were simply low-tech color photocopies. Sioux Falls police spokesman Sam Clemens said the reason someone was able to get away with passing off about $200 worth of the bills is that he wrapped the phony ones inside of a real one, then rushed out the door before employees could stop him. The bills were used at more than a half-dozen businesses before police arrested a suspect -- inside a hotel room he allegedly paid for, in part, with a fake bill. The man is being held in jail. The Secret Service will determine if he'll face federal charges.