我承认，我很高兴您还没有一个可行的解决方案，因为它提供了一种在人们登录时嗅探密码的绝佳方法在.您确定您确实需要该功能吗?您将如何使您的用户放心

I confess I'm quite glad you haven't got a working solution, because it would provide an excellent means of sniffing passwords as people log in.  Are you sure that you really need the functionality?  How will you be able to reassure your users that you are not sniffing passwords etc.?