FILE - In this Feb. 27, 2013 photo, a man uses the NFC payment Visa system at the Mobile World Congress, the world's largest mobile phone trade show, in Barcelona, Spain. (AP Photo/Manu Fernandez, ... more 
FILE - In this Feb. 27, 2013 photo, a man uses the NFC payment Visa system at the Mobile World Congress, the world's largest mobile phone trade show, in Barcelona, Spain. (AP Photo/Manu Fernandez, File) less 
1 / 28
Associated Press | Photo By Manu Fernandez, File
Fri, Mar 1, 2013 3:19 AM EST