This requires the system to have a back door. Choose one: secure (i.e. encrypted) or has-back-door. It's not possible to have both. If authorities want to read

This requires the system to have a back door. Choose one: secure (i.e. encrypted) or has-back-door. It's not possible to have both. If authorities want to read the messages of someone, they need to lawfully get access to their device and read the messages.