At Convergence I needed a way to offer customers the option of using credit cards. What I needed to have was a smart phone. Then I got (for free) a gadget called Square Up which goes on top of the phone so you can swipe credit cards. What fun–for me and the customers who “signed” using a finger. Now I’m having fun with my iPhone–a toy that I really didn’t need. Pay Pal has just put out their own gadget.