- Jun 26, 2004
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Quote: Researchers from MIT have discovered a way to send highly targeted audio signals directly to someone's ear at a distance using laser beams. The system works using the "photoacoustic" effect, where water vapor in the air absorbs light, forming sound waves. The research may pave the way to systems that allow audible messages to be transmitted to spies or other agents, warning them of impending danger like an active shooter.
Source: 'Whisper' laser tech sends audible messages to specific people
Quote: Portable radios crackle. Not to mention they broadcast on the open air waves. Slipping a note is dangerous. Mobile phones don’t cut it. And a shout would ruin everything. So how do you whisper a message to a colleague without being noticed?
How do you pass on a message while in a crowded room, without blowing your cover?
How do you listen to music while studying under the watchful eyes of your parents?
Source: A whisper in your ear - via laser
Source: 'Whisper' laser tech sends audible messages to specific people
Quote: Portable radios crackle. Not to mention they broadcast on the open air waves. Slipping a note is dangerous. Mobile phones don’t cut it. And a shout would ruin everything. So how do you whisper a message to a colleague without being noticed?
How do you pass on a message while in a crowded room, without blowing your cover?
How do you listen to music while studying under the watchful eyes of your parents?
Source: A whisper in your ear - via laser