I don't have a problem with this, but I almost never carry cash. It's always an after thought with a 'Oh, hmm, they may only take cash at the parking garage'. I'm surprised sometimes how people who complain about carrying coins, carry so much paper money. If it's a hassel use your check card which is the same as cash. Although if you are the tin foil hat type, then you have a whole litany of why you won't.