MasterCard is finally pushing chip-and-PIN credit cards in the U.S. around a decade after the tech took off in Europe. It's the end of the magnetic strip, and the last gasp for your plastic credit card before the revolution comes.
Twitter co-founder Jack Dorsey just flicked on the public spotlight over his new venture: Square. It's a tiny plastic blob that gives smartphones the ability to act as secure credit card readers. It's clever, disruptive, but will have to evolve very rapidly.