This is very simple to set up. A monitor with a touch screen capability and a Magnetic Strip Reader "wedge" can be connected to your system and Filemaker will respond to the input from these devices just as though you typed in the info from a keyboard. You research barcode and Magnetic strip reader threads on this forum (Barcode readers work almost identically so threads on Barcode readers will give examples that also work with MSR systems.)
You can google search for the hardware, just make sure that they can operate in "keyboard emulation mode" (almost all do).
I have a solution here that reads name and address data off state drivers license Mag strips so once you get started with some actual hardware, feel free to post back about some of the nuts and bolts on MSR systems.