Certain fields include sensitive knowledge. This information and/or skills could be used in programmes to develop Advanced Conventional Military Technology (ACMT), weapons of mass destruction (WMDs) or their means of delivery. ATAS Certificate applies to students aspiring to undertake study or research at the postgraduate level in such sensitive subjects.UKVI has mandated the Academic Technology Approval Scheme (ATAS) as a part of the visa process. If their undergraduate course has an integrated master's year, they too are required to get an ATAS clearance.