This document discusses the application of luminescence techniques to national security issues. Specifically: 1. Luminescence can be used to detect radiation exposure in materials like bricks and salt, even after radiation sources have been removed. This allows reconstruction of "dirty bomb" sites and forensic analysis of cleaned facilities. 2. The Defence Science and Technology Organisation is working with the University of Adelaide to develop expertise in luminescence techniques. They are studying how different common materials like ceramics, glass and salt can reveal prior radiation exposure through luminescence signals. 3. Precise luminescence measurements of the absorbed radiation dose in opportunistic materials like those found at homes or carried by people may help with