If it’s useful to the brain injured or those with trauma affected lives obviously you’d applaud it.
But the cynic in me thinks the only application people would be interested in is some sort of ‘big brother’ application to be used by those with questionable intent.
The suspect fitted with such a device so those in law enforcement determine whether he is telling their idea of the truth.
The crazies currently determining whether you should have the right to vote (witness just about every southern U.S. state in the last twenty years)
However if such a thing should happen, I think a new law would need to be passed insisting that every politician be required to wear it whenever speaking.