The Bureau of Engraving and Printing (BEP) is seeking information on novel hidden machine-readable security features for future U.S. currency through a Request for Information (RFI). The objective is to explore technologies and materials that are difficult to detect, challenging to analyze, and can be read by advanced detection systems, while also being resistant to counterfeiting and compatible with production and environmental standards. This initiative is crucial for enhancing the security of U.S. currency against counterfeiting threats. Interested parties are invited to submit preliminary samples and technical descriptions to Chris Dollberg by November 15, 2026, at 2:00 PM Eastern Time; please note that this RFI is for informational purposes only and does not constitute a solicitation for services or materials.