Washington: The popular messaging service WhatsApp said on Tuesday it had implemented ‘full end-to-end encryption’, a move which steps up privacy but may lead to conflicts with law enforcement agencies. The Facebook-owned mobile application with one billion users worldwide made the announcement following weeks of intense debate over efforts by US authorities to compel Apple to help break into an encrypted iPhone. “WhatsApp has always prioritised making your data and communication as secure as possible,” a blog post announcing the change said. “And today, we’re proud to announce that we’ve completed a technological development that makes WhatsApp a leader in protecting your private communication: full end-to-end encryption.”