Windows Vista Service Details
Smart Card certificate handling. Microsoft has included many smartcard services in Vista, but probably not too many people use them. Do not get these confused with memory cards, they are completely different things. SmartCards are used sometimes for logging into vista instead of a password. If you do not have a smartcard reader, this will never be enabled, so setting it to disabled will not affect system performance.
Propagates certificates from smart cards.
Consequences of Stopping:
All services listed in 'Required For' will be unable to function