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.
Jack Dorsey's Square is on a ($100 million) tear this week, but the competition is heating up--and they have bigger plans for a wireless payment future that could arrive as soon as next year.
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.
