Connectivity Issues

• How do I connect an audio jack card reader?
• How do I connect a bluetooth card reader?
• How do I handle multiple bluetooth devices being found alongside the reader?
• How do I listen for a card reader disconnecting?
• How do I know when the card reader is connected?
• How do I properly disconnect a reader?

USB Connectivity Issues

• How do I prevent the USB permission prompt from appearing if the checkbox has been checked?

Transactions

• How do I authenticate my terminal?
• How do I perform a sale without a reader/card swipe?
• How do I perform an EMV sale?
• How do I perform a swiped card sale?
• How do I issue a refund?
• How do I void a transaction?