This week in pictures: Whitman takes the helm at HP
Also: Mr. Schmidt goes to Washington; Page and Ellison fail at mediation; Al Gore slips iPhone 5 release date; Yahoo blocks emails about Wall Street protest; Richard Stallman attacks open source; and Kim Kardashian dresses as Slave Leia.
Google Wallet goes live
At long last, Google has launched its Google Wallet mobile payment application on Sprint Nexus S 4G smartphones. Read more.