CWA 16926-17:2020

Extensions for Financial Services (XFS) interface specification Release 3.40 - Part 17: Barcode Reader Device Class Interface - Programmer's Reference


About this standard

Standards committee
Publication date
15 February 2020
ICS Code
35.200 (Interface and interconnection equipment)
35.240.15 (Identification cards. Chip cards. Biometrics)
35.240.40 (IT applications in banking)
Withdrawn Date
21 December 2022

About this training


This specification describes the functionality of a Barcode Reader (BCR) Service Provider. It defines the service-specific commands that can be issued to the Service Provider using the WFSGetInfo, WFSAsyncGetInfo, WFSExecute and WFSAsyncExecute functions.
Persistent values are maintained through power failures, open sessions, close session and system resets.
This extension to XFS specifications defines the functionality of BCR service.
A Barcode Reader scans barcodes using any scanning technology. The device logic converts light signals or image recognition into application data and transmits it to the host system.
The basic operation of the Barcode Reader is managed using WFSExecute/ WFSAsyncExecute functions.
When an application wants to read a barcode, it issues a WFS_CMD_BCR_READ command to prepare the scanner to read any barcode presented to it. When a document is presented to the BCR and a barcode type is recognized, a completion event is received which contains the barcode data that has been read.