Intermec PR3

Chapter 1 — About the Printers
12 PR2 and PR3 Mobile Receipt Printer User Manual
4 Close the media door. Make sure you press down on the door until
it snaps shut.
Read Magnetic Stripe Information
Use the integrated PCI-compatible Magnetic Stripe Reader (MSR)
option to securely capture payments and immediately provide receipts.
1 Position the card so that the magnetic stripe faces the media door.
Note: To read data from a card, you need an application running on
your host PC.