Major tech companies have filed documents with the U.S. courts in support of Apple Inc.'s position against creating a workaround for investigators to access encrypted information on an iPhone connected with the Dec. 2 attack in San Bernadino, Calif. "The government's demand here, at its core, is unbound by any legal limits," said the brief filed Thursday with the U.S. District Court by a coalition of companies including eBay Inc., Kickstarter Inc., Reddit Inc., Twitter Inc. and Airbnb Inc. Apple is appealing a court order from the FBI to create a new version of its iPhone...