The data and methods needed for the support of self-service, unattended, operations have been defined for XFS (eXtensions for Financial Services) within the following device classes: • Printer and Scanners • Identification Card Units • Cash Dispensers • Personal Identification Number Keypads (PIN pads) • Depository Units • Text Terminal Units • Sensors and Indicators Units • Vendor Dependent Mode • Cameras • Card Embossing Units • Alarms • Cash-In Modules • Card Dispensers • Barcode Readers • Item Processing Modules • Biometric Devices The following sections detail for each of the service classes defined for this version of CEN/XFS: • the standard values to be used as class attribute in the configuration information • the unique number assigned to each service class • the types of devices defined and supported by the service class specifications