IE7 Smartcard PIN Prompt

I can open as many instances of IE7 as I want and I get prompted for a cert each time (but no PIN). However, if I close any of the instances of IE7, then on the next open I g开发者_JS百科et the PIN prompt. So it seems to me that the IE7 program is doing something when it is closed to tell the smart card to "expire" the current PIN. I would like to find out what IE7 is doing to cause that to happen (when it closes) because I want my program to be able to do that too. Any ideas on how I could find that out?

Thanks!

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Resetting the card will exipre the PIN. See this answer for more information.

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The PIN caching behavior you are observing might just be a middleware administration matter. See chapter 8 of the ActivClient Administrators guide. Pin caching can be session, or process based, among other criteria like intended key usage, timeouts, and whitelists.

There is a good chance that closing the keystore is not possible in regular javascript. That kind of operation might cross some security boundary.