Special Notice: NATIONAL AERONAUTICS AND SPACE ADMINISTRATION is seeking inquiries from companies interested in obtaining license rights to commercialize, manufacture, and market a reliable geo-limitation algorithm for unmanned aircraft. This technology, called Safeguard, is developed by NASA Langley Research Center and is designed to detect and prevent unmanned aircraft from flying beyond authorized perimeters and into no-fly zones. Safeguard can be applied to both rotary- and fixed-wing systems and has the potential to comply with pending regulatory directives for geo-limitation in the UAS industry. The technology is an independent avionics equipment that can be easily integrated into any unmanned aircraft. It weighs approximately 1 lb and includes formally verified algorithms to monitor and predict boundary violations. The system operates independently of the UA and any on-board components, such as the autopilot, ensuring separation from non-aviation-grade systems. The perimeter boundaries can be described using polygons, allowing for flexibility in defining boundaries. Interested parties can submit a license application through NASA's Automated Technology Licensing Application System (ATLAS). No funding is provided by NASA in conjunction with these potential licenses. For more information, please visit the NASA Technology Transfer Portal.