Today most people travel without cash, relying on their debit/Interac cards and credit cards to cover all of their expenses. It's just easier than constantly having to hit the ATM to increase cashflow for every little purchase. Unfortunately, there is one thing that you do need cash for, and that's leaving tips for the staff that you meet while you're on your travels. Fortunately, a new website makes it possible to travel cashless and leave a tip!