Hi all,

I'm hoping someone can help me with this question:

I'm building a winforms .net application which is going to use a web  
service with https. I have a certificate protected in a  biometric  
smart-card and the firt time i call the web-service i have to use my  
fingertip to release the private key to establiss the ssl session. The  
next requests to the web service do not ask for my fingertip again which  
is ok, the ssl session is already established.
What i would like to do is when i call a "logoff" method in my application  
i would like to close the ssl session so that the next request would  
create a new ssl session and ask for my fingertip again ( login to the  
smart-card ).
With this i would like to simulate a login/logoff "procedure" to the web  
service.
My problem is that i can only simulate this if i close the application. Is  
there any way i can force a ssl session to close so that the next request  
asks for my private key again?

Thank u very much!
Antonio Dias