If you are deploying AX2012 R3 and starting to learn the new warehouse management module you are going to get into barcodes and the mobile device. Zach from the AX supply chain development team just did a post on their blog giving some good coverage of some of the new concepts. You can find the post here.

http://blogs.msdn.com/b/dynamicsaxscm/archive/2015/04/29/barcode-scanning-in-the-mobile-device.aspx

Cheers

Lachlan