The UN Security Council recently passed a resolution requiring countries to collect biometric data from suspected terrorists as part of an effort to prevent terrorists from travelling. The biometric data will be compiled along with Passanger Name Record (PNR) data and Advanced Passenger Information (API) to develop watchlists of known and suspected terrorists.
UN Security Council Resolution 2396 (PDF) on Foreign Terrorist Fighters addresses the risk of former ISIS members committing terrorist attacks around the world following the collapse of the pseudo-state, according to a statement by U.S. Secretary of State Rex Tillerson.
The resolution also calls for stricter aviation security standards, which could include biometric checks, as well as enhanced counterterrorism information sharing between UN member states.
The resolution was unanimously adopted by the Security Council, and co-sponsored by 66 countries.