Hang on to your wallets and purses. In the constant search for the next thing to disrupt, Silicon Valley's entrepreneurs and venture capitalists believe that lugging around all that plastic and cash is a cumbersome system ripe for reinvention.
But listing the problems with the current system is one thing. Revolutionizing it is another.
I got a pretty good sense of those daunting challenges while moderating a panel last week at the Future of Money and Technology Summit in San Francisco. The panel included several venture capitalists and entrepreneurs who are taking aim at this tantalizing opportunity.
There seemed to be a general agreement that somehow, some way, everything about how we pay for stuff is going to change. You'd expect to hear that from the wide-eyed optimists from Silicon Valley.