Facebook has an internal tool for developing mobile applications  primarily using HTML5, which eventually should allow it to bring every  feature of its Web platform onto mobile devices. 
 
 Facebook used the tool, internally called Faceweb, to introduce  continuous News Feed updates to mobile devices last week, said Erick  Tseng, head of mobile products at Facebook. The company hopes to have  conjoined launches of feature updates on both mobile applications and  the Web, he said at the Mobilize conference in San Francisco.
 
 "The reason we're so excited about Faceweb is because by using HTML5  instead of all native development ... it allows us to actually keep pace  with desktop features," Tseng said. HTML5 is a standard Web development  language that can bring many capabilities of native apps, including  offline operation, to the Web.  
 
 Facebook considers itself not a social network but a platform that can  be pervasive throughout a user's mobile experience, Tseng said. Device  makers including HTC and Sony Ericsson have already used Facebook APIs  (application programming interfaces) to integrate Facebook functions  deep in Android phones. This lets users plug into the "social graph" of  the platform without even consciously going into a Facebook app or  logging in. "That's a platform," Tseng said. 
 
 One new feature headed to mobile devices is Ticker, the real-time stream  of friends' posts that appears in the corner of the Web browser. Ticker  is especially well-suited to mobile because users can quickly check up  on what's happening when they briefly have time, such as at a bus stop,  Tseng said.
 
 However, Tseng said he couldn't comment on whether Facebook will be  integrated into Apple iOS 5, the new operating system coming in the  iPhone 5, which is expected to debut next week. Apple disclosed earlier  this year that the OS will include Twitter integration. 
 
 "I think it would be a great combination. Hope to see it soon," Tseng said. 
 
 Tseng also declined to comment on when an expected Facebook app for the iPad will come out.
