Safety-critical product recalls are a major public health issue in Australia. Recent extortion attempts involving poisoning of chocolate bars, paracetamol tablets and biscuits have demonstrated the urgent need for improved ways of locating commercial products that have been released into the community. Existing product recall tools are effective only within regulated manufacturing and warehousing facilities. This project will develop novel techniques for locating items in large-scale distribution networks driven by complex logistic processes. The outcomes of the project will make it easier to rapidly and accurately pinpoint product locations outside controlled facilities, thus contributing to both cost savings and public safety.