Border Searches of Cell Phones Require a Warrant, Rules US Federal Judge in a Historic Decision

"The cell phone likely contains huge quantities of highly sensitive information—including copies of that person’s past communications, records of their physical movements, potential transaction histories, Internet browsing histories, medical details, and more … No traveler would reasonably expect to forfeit privacy interests in all this simply by carrying a cell phone when returning home from an international trip," writes the EFF.