The Bureau of Engraving and Printing (BEP) within the U.S. Department of the Treasury is issuing a Request for Information (RFI) to explore advancements in hidden machine-readable security features for U.S. currency. This initiative aims to gather insights on innovative technologies or materials that can effectively deter counterfeiting, with a focus on features that are discreet, difficult to replicate, and resilient against unauthorized duplication. The information collected will inform potential future solicitations, although this RFI does not obligate the government to award contracts or provide feedback. Interested parties are encouraged to submit preliminary samples and technical descriptions by October 9, 2025, and can reach out to Kevin Ibershoff or Falcon Albino via email for further inquiries.