Our Mission

Tech 4 Tracing (T4T) is an international, US-based non-profit working to apply new technologies to arms and ammunition control. T4T is currently engaged in two parallel efforts: 

  • incubating an innovative technology platform for capturing, cataloging, and comparing small arms and light weapons data; and
  • building partnerships with peacekeeping, law enforcement, and human rights investigation communities to enhance and improve their abilities to understand and address illicit arms flows; bring perpetrators of armed violence to justice, and contribute to safer societies.

T4T aims to augment the capabilities of actors involved in arms and ammunition identification and tracing globally, to create easy to use tools to increase the number of actors who could contribute to this field, and to empower qualified actors to disrupt illicit arms and ammunition trafficking and misuse.

T4T was recently selected for a grant from the UN Trust Facility Supporting Cooperation on Arms Control

Our Experience

T4T’s founders bring together decades of experience in armed violence prevention, humanitarian and peace operations, with cutting-edge technological expertise in software development.

Our Core Values

T4T is committed to contributing to efforts to identify and interdict illicit arms and ammunition, to aid in the prosecution of human rights violators and criminals, and to leverage emerging technologies for social good and the reduction of armed violence in conflict zones and crime contexts.

Our Founders

Robert Sim received his PhD degree in Computer Science from McGill University in 2004. He has more than seventy-five publications and technical patents in the fields of Robotics, Computer Vision, Artificial Intelligence, Machine Learning, Security, Privacy, and User Safety. He is currently a Research Manager at Microsoft Research, where his research focus addresses problems in privacy-preserving machine learning. He can be reached at

Emile LeBrun began his career in 1994 working with physicians and public health organisations in the United States to promote epidemiological approaches to reducing urban and rural gun violence. He was later a staff member of the Johns Hopkins Center for Gun Policy and Research before relocating to the Netherlands in 2002. Since then he has worked as independent expert / consultant, researcher, writer and project coordinator for the Geneva-based Small Arms Survey, as well as for the UN Development Programme, the Centre for Humanitarian Dialogue, and the Royal United Services Institute, among others. He has led projects and written extensively on illicit arms proliferation, peacekeeping prevention roles, and arms embargo monitoring, among other themes. He can be reached at

David Lochhead has 17 years of field experience with the UN in peacekeeping contexts working on conflict sensitive development, arms control, border security, SSR/DDR, conflict analysis and joint operations management. Mr. Lochhead was until September 2020 a Senior SSR Officer with MINUSMA, responsible for the MINUSMA Border Security and Counter-Proliferation Programme, combining strategic-level policy development, arms and ammunition tracing and border strengthening efforts linked to the mission’s mandate. He has been involved in numerous arms and ammunition tracing missions, including, in support of UNMIS(S) and MINUSMA Human Rights Division investigations, as Chair of two UN Boards of Inquiry and has contributed arms and armed group related analysis to the work of UN Panels of Experts and UN Commissions of Inquiry. He is also qualified as a Level 3 EOD Reconnaissance Team Leader. David Lochhead currently works as a Senior Researcher with the Geneva based Small Arms Survey on IED component trafficking and as a Technical Advisor to UNDP Mali on counter-poaching. He can be reached at