Hi,
Windows hello 是UWP的API, 应该不能直接在WPF的应用上使用, 你的问题更适合在下面的论坛咨询。
Windows 10 通用应用开发及Web App技术讨论区
https://social.msdn.microsoft.com/Forums/zh-CN/home?forum=window10app&filter=alltypes&sort=lastpostdesc
Best Regards,
Bob
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