By choosing the "multi-card payment" tool with SplittyPay, you will have the possibility to "split" an online transaction on different debit / credit cards.
Once you have entered the SplittyPay website, you can insert multiple credit cards and decide the amount to be charged on each. In addition, you will be able to send a "payment invitation" to allow your travel companions to pay their fee by entering their credit / debit card.