The SpeechJammer, when pointed directly at someone, will scramble their words so they can no longer talk.

How often are we surrounded by boring conversation, people talking on their cellphones and people who just won't stop talking? We always wish there was a way we could just tell them to stop but more often than not the result is simply a messy or awkward confrontation. So what if there was a way to actually stop them in their tracks regardless of how much they wanted to continue to ramble?

Researchers in Japan have developed a humorous new device that effectively confuses someone into not talking anymore. The SpeechJammer, which looks more like a police radar gun, works by playing back to the speaker what they are saying with a delay of 200 milliseconds. According to the principle of Delayed Auditory Feedback, when confronted with their own words, a person becomes incapable of speaking further.

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