davidfacesign FaceSign by: davidfacesign .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. 183 total downloads last updated 8/19/2026 Latest version: 0.0.2 facesign verification step-up authentication biometrics identity FaceSign step-up verification SDK (reserved name; the official .NET SDK ships as FaceSign.SDK). See https://docs.facesign.ai