I have two options here:
1 - create a Tracking software/program that is compatible with a merchant account and its gateway...you would need to provide me details of what merchant account is required to be compatible with the Tracking software that you create as different merchants have different processors etc.
2 - I already have a tracking software? called mantis, this could be used to integrate to a merchant account (however apparently is not so easy hence why i suggested the above option).
Please contact me on zakia_yusuf AT hotmail Dot com so we can discuss further and I can provide you more details.? I prefer no2 as, please let me know if you can help me.