
The Google Inc. Mobile Wallet application for cardless payment is displayed on a smartphone screen at the Mobile World Congress in Barcelona, Spain, on Wednesday, Feb. 29, 2012. The Mobile World Congress, operated by the GSMA, expects 60,000 visitors and 1400 companies to attend the four-day technology industry event which runs Feb. 27 through March 1. Photographer: Chris Ratcliffe/Bloomberg
Chris Ratcliffe/Bloomberg