Sitting in the back of a speeding taxi, I was able to check into my early morning Delta flight with my iPhone. I was able to pay my baggage fee and it was easy; all while speeding down the freeway at more than 70mphs.
I usually pay for my taxi fare with a credit card. It makes managing my expenses so much easier and cuts the preparation time for monthly expense reports. It took the bellman about 10 minutes for find a taxi on South Beach in Miami who would agree to accept a credit care...they prefer ca$h. The driver happily agreed to accept the credit card for the healthy fare to from South Beach to FLL.
Imagine my surprise when I handed him my credit card at the end the trip and he pulled out his pen and clipboard to transfer the credit card number to the carbon paper form. He didn't think it was odd to scratch the number on to the form...despite the success of NYC taxi and the cashless system. I guess Florida is a long way from NYC! (This all strikes me as technically bizarre because Delta and other major airlines have gone cashless within the last year, with their handheld credit card terminals).
note: When I see handheld terminals at use in restaurant's and bars in UK/Europe I don't give it a second thought but I still get a chill when I see someone here in the State whip one out!