What is "Smart Card" in my Windows 7 service list? And how is "Smart Card" service related to shsvcs.dll?

"Smart Card" is a Windows 7 service that "Manages access to smart cards read by this computer. If this service is stopped, this computer will be unable to read smart cards. If this service is disabled, any services that explicitly depend on it will fail to start." "Smart Card" service is provided by shsvcs.dll DLL file.

Detailed information on "Smart Card" service:

Service name: SCardSvr
Display name: Smart Card
Execution command: 
   C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
Start type: Manual
Service status: Stopped
Dependencies:
   Plug and Play

"Smart Card" service is provided by a DLL file called: shsvcs.dll:

Name: shsvcs.dll
Location: C:\Windows\System32\shsvcs.dll
Description: Smart Card Resource Management Server
File version: 6.1.7600.16385
Size: 129 KB (132,608 bytes)
Modified: Monday, July 13, 2009, ?9:16:13 PM

Disabling "Smart Card" service should not cause any issues when running Windows 7 system.

⇒ "SSDP Discovery - SSDPSRV.dll" Service on Windows 7

⇐ "Quality Windows Audio Video Experience - QWAVE.dll" Service on Windows 7

⇑ 'svchost.exe -k LocalServiceAndNoImpersonation" Services on Windows 7

⇑⇑ Windows 7 Services Tutorials