### Smart Card Probe Order

The Sun Ray system supports smart cards from different vendors. Information about smart card types is extracted from vendor-supplied configuration files, which are located in the: /etc/opt/SUNWut/smartcard directory. All files end with a .cfg suffix, as in, acme_card.cfg.

The order in which smart cards are inspected is called probe order. Much like the `utcard` command, the Card Probe Order tab (under the Advanced tab) allows you to specify a group-wide probe order, which is stored in the Sun Ray data store. Every time a smart card is inserted into a DTU, the Sun Ray system tries to identify the card type using the specified probe order. Only smart cards whose types are found in the probe order list will be accepted. You can add or remove smart card types from this list to restrict session access to specific card types.

Note – In the absence of a group-wide probe order, Sun Ray servers use local probe order definitions. If no local probe order has been setup, a default probe order is used.

Note – Changes in smart card probe order require Sun Ray services to be restarted.