This is actually useful tech - I've been in many situations where other people talk louder and longer than me (I have a quiet voice and don't interrupt others w

This is actually useful tech - I've been in many situations where other people talk louder and longer than me (I have a quiet voice and don't interrupt others when they say something - I'm always perplexed when others do it) and instead of escalating and turning a debate into a shouting contest, one could use these devices (though I don't see that actually happening since it would make a lot of people angry). As for free speech - it's not really a danger - if you're having a protest, the last thing you wanna do is shut people up - they're going to start destroying your equipment and it will quickly turn into a full-fledged riot...