toro.startTransaction(
    amount = 1000,  // £10.00
    type = TransactionType.Purchase
    currencyCode = CurrencyCode.GBP,
    metadata = TransactionMetadata(
        saleReferenceId = "ORDER-123",
    ),
    onCompleted = { receipt ->
        // Handle successful transaction
        println("Transaction completed: ${receipt.transactionId}")
    },
    onCancelled = { cancellationType ->
        when (cancellationType) {
            CancellationType.ATTENDANT -> println("Transaction cancelled in app")
            CancellationType.CUSTOMER -> println("Transaction cancelled on Miura device")
        }
    },
    onError = { error ->
        when (error) {
            is DeviceNotSelected -> handleDeviceError(error)
            is DeviceConnectionFailed -> reconnectDevice()
            is DeviceDisconnected -> showReconnectionPrompt()
            else -> showErrorMessage(error.message)
        }
    },
    onGratuityConfirmed = { gratuityAmount, gratuityPercentage ->
        // Handle gratuity confirmation
        println("Gratuity added: £${gratuityAmount / 100.0} ($gratuityPercentage%)")
    }
)