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At the moment you need TV Aerials for Freeview and BT Vision but there is the Freesat alternative that is by a satellite dish. But I beli...

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Monday, 28 January 2019

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. The ability to send highly targeted audio signals over the air could be used to communicate across noisy rooms, or warn individuals of a dangerous situation such as an active shooter.

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