On Windows Vista 64-bit, the Smartcard Server and corresponding SCard functions take longer (2-3 seconds) to detect smartcard insertion and removal than the Windows WM_DEVICECHANGE event. There is no delay on Windows Vista 32-bit or Windows XP. Is there some new native method for the SCard functions on Windows Vista 64-bit

Smartcard Server slow on Vista
kennm
If you’re having a hardware issue, please contact hardware manufacturer or reseller. If you having an issue with 3rd party software, please contact respective software manufacturer or reseller. Otherwise please post to relevant forum or news group:
http://support.microsoft.com/newsgroups/default.aspx
Closing as off topic.
Explanation: In this forum "Smart Device" is something running variation of Windows CE OS, not something with a word “Smart” in the name. E.g. nether Smart car not Smart Cards are "Smart Devices" here.