ISO IEC 7812-2 pdf download.Identification cards — Identification of issuers 3 Terms and definitions For the purposes of this part of ISO/IEC 781 2, the terms and definitions given in ISO/IEC 781 2-1 and the following apply. 3.1 administrative blockholder body/business entity that is assigned a block of Issuer Identification Numbers (IINs) for re-assignment to card issuing organizations within its...