How the Secret Service Uses Ink to Solve Crimes

The video explores the role of the Secret Service in solving crimes using forensic ink analysis. It introduces the team of analysts, including Irena Gaiman, who works with the world's largest ink library. The video explains how ink analysis can identify the source of threatening letters or counterfeit currency by breaking down the ink's color components. The scientific process is likened to DNA sequencing, revealing the complexity of seemingly simple black ink. The video concludes with a note on the confidentiality of ongoing investigations.

Can you explain the process of how ink analysis can help solve crimes?

What challenges do investigators face when dealing with counterfeit currency?