Encryption: FBI building fresh case for access to electronic devices

James Comey, the agency's director, says it is gathering information in preparation for 'adult conversation' on balancing privacy with need to fight crime

The FBI director, James Comey, has warned again about the bureau's inability to access digital devices because of encryption and suggested investigators wanted an "adult conversation" with manufacturers.

Widespread encryption built into smartphones was "making more and more of the room that we are charged to investigate dark", Comey said at a cybersecurity symposium.