Pairing a card machine

You can pair a card machine without needing to go through the payment flow by calling:

1YocoSDK.pairTerminal()

Normally, when starting a payment through YocoSDK.charge(), the user will automatically be taken through the payment flow if they have not paired to a card machine before. It is only necessary to call YocoSDK.pairTerminal() if you explicitly want to pair without starting a payment.