How to replace TransTrack Functionality

Hi,

Currently client is using SAP R/3 as well as TRANSTRACK (Supplied by Transtrack International).

Currently Transtrack does the following things...

It receives the master route schedules from SAP and creates no. of daily schedules. It reads BAR code, which generated by SAP and stickled on the packing. It transfers the daily route and this bar code details to van driver hand held machines. It reads once again the Barcode details after delivery.

Can you please advise, by using which functionality of SAP we can replace this TRANSTRACK functionality entirely.

Help need urgently.