In South Korea, and I'm sure in plenty of other countries, people are using their cell phones to pay bus fares. Here's an excerpt from an article I found on Google:
"What caught my attention was getting the chance to see the world’s first Universal Mobile Payment System being used by students in the school. Instead of identification cards, students use their cell phone as ID card in entering the school, borrowing books from the library, paying for food, taxi, bus fare, groceries, and even withdrawing money from the ATM machine."
I can't wait for this to start happening in the U.S.
