2. The method of claim 1 , wherein generating voice XML data comprises transforming text data to speech, the speech to be outputted by the portable device.
1. A method of interfacing, in a web-enabled console application, to communicate between a warehouse management system and a portable device, the method comprising: receiving, from the warehouse management system, graphical user interface (GUI) screen data comprising visual content; generating voice extensible markup language (XML) data based on the visual content by a computer system, the voice XML data including at least one portion which is representative of voice information; transmitting the generated voice XML data to the portable device; reading a radio frequency identification (RFID) tag information with the portable device; transmitting the information to the web-enabled console application; and modifying the RFID tag information responsive to an instruction transmitted via the web enabled console application to the portable device.