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New Technology Uses Lasers to Transmit Audible Messages to Specific People

“Researchers have demonstrated that a laser can transmit an audible message to a person without any type of receiver equipment.”

https://www.osa.org/en-us/about_osa/newsroom/news_releases/2019/new_technology_uses_lasers_to_transmit_audible_mes/

https://phys.org/news/2019-01-technology-lasers-transmit-audible-messages.html

https://news.ycombinator.com/item?id=19051435

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