SalesPoint allows you to use almost any card reader.
The card reader must be configured to be in HID mode and send a new line after a completed read. Please consult with your reader user manual to set this up if it isn't already.
You can test this by opening notepad and reading a card. The result should be:
REGISTER SETTINGS
1. From the sign in screen, press the hardware setup button (outlined in red below)
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2. From the tabs on the left select 'Peripherals'
3. Next to 'HID card reader' press 'Select'
4. Read a card with the card reader.
Congratulations, your card reader is now set up!