We already have them in the air sector and the marine sector. Actually, the regulatory environment there is done on an international scale through the International Civil Aviation Organization, which is located in Montreal. They have had voice recorders on the aircraft for decades. That's in addition to the black box that goes in the aircraft to know how the aircraft itself behaves. They already have that. You often hear those tapes on TV when you see they're also in touch with air traffic control, and the air traffic control has the same kind of capability. They, in fact, already exist.
On September 11th, 2017. See this statement in context.