Many have designed such a system, but you won't find it "built in". Filemaker is a system development application and this is one of many systems you could develop. You may find that someone else has created such a system and is offering it for sale.
Scanning barcodes and MagStripes is easy to handle in Filemaker. If you need it to interact with a cashdrawer and other POS gadgets, that may take a plug in and some extra programming.
If you enter barcode in the search box on upper right of your screen, you'll find any number of threads that discuss barcodes.
There are a few plug ins you can add to create what your looking for, or maybe find a solution.
Here is something i found straight from filemakers website:
And here is their website:
Also here is something for barcodes if you are looking at making your own solution:
Thank you both ever so much for the information. Away I go to do some more research. I appreciate your help.