ISO/IEC 29109-5:2011 supports applications using face images formatted according to ISO/IEC 19794-5:2005. It defines conformance test assertions that allow a receiving system to check the encoding requirements of ISO/IEC 19794-5:2005 are met and are internally consistent. Formally, ISO/IEC 29109-5:2011 establishes requirements for a conformance test suite that assesses conformity of ISO/IEC 19794-5:2005 records from conformant products. It is intended primarily for use by testing organizations, but can be applied by developers and users of test method specifications and test method implementations. It does not establish tests for checking the visual appearance requirements of an ISO/IEC 19794-5:2005 face.