Many major companies are hoping that consumers will use their smartphones as a credit or debit card, and Google may be preparing to join in with its Android phones. But is the trend, which has grown popular in Japan, finally ready to take off in the U.S.?
Square makes it much easier for even the smallest retailers to accept credit cards: The mobile payment firm offers easy to use hardware that plugs right into iPhones or Android devices. But at least part of its new high price tag probably derives from the fact that its founder, Jack Dorsey, also co-founded Twitter.






