Always try to use the card’s chip to make a transaction.
The mPOS SDK will handle the rest.
Put the card (chip-up and first) into the chip slot of the card
reader until you feel a resistance.
If this does not work, the app will askyou to swipe the
card's magnetic stripe through the swipe slot of the card
reader.
If your card does not have a chip, you can start trying to
swipethe card. If the reader tells you to use the chip,
simply put the card in the chip slot (any direction that fits). The
reader will ask you to swipe again.