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2. Lasers can silently issue 'voice commands' to your smart speakers

   www.engadget.com/2019-11-05-lasers-voice...

   1 / 2. Light Commands. Laser pointers can apparently trick smart speakers, phones and tablets into following voice commands to open doors or make purchases, even from hundreds of feet away ...

3. Quantum dot laser - Wikipedia

   en.wikipedia.org/wiki/Quantum_dot_laser

   A quantum dot laser is a semiconductor laser that uses quantum dots as the active laser medium in its light emitting region. Due to the tight confinement of charge carriers in quantum dots, they exhibit an electronic structure similar to atoms. Lasers fabricated from such an active media exhibit device performance that is closer to gas lasers ...

4. Walmart patents surveillance tool that can eavesdrop on workers

   www.engadget.com/2018-07-12-walmart-patent-audio...

   Walmart. It looks like Amazon and Walmart, which have long been battling it out in the retail arena, both want to keep a very close eye on their workers. Earlier this year, Amazon patented smart ...

5. Laser designator - Wikipedia

   en.wikipedia.org/wiki/Laser_designator

   A laser designator is a laser light source which is used to designate a target. Laser designators provide targeting for laser-guided bombs, missiles, or precision artillery munitions, such as the Paveway series of bombs, AGM-114 Hellfire, or the M712 Copperhead round, respectively. When a target is marked by a designator, the beam is invisible ...

6. Sound amplification by stimulated emission of radiation

   en.wikipedia.org/wiki/Sound_amplification_by...

   A phonon laser device. Sound amplification by stimulated emission of radiation ( SASER) refers to a device that emits acoustic radiation. [1] It focuses sound waves in a way that they can serve as accurate and high-speed carriers of information in many kinds of applications—similar to uses of laser light. [citation needed] Acoustic radiation ...

7. The best smart speakers for 2024 - Engadget

   www.engadget.com/best-smart-speakers-151515264.html

   The Echo Dot is the best small smart speaker for most people and one of the most compact Alexa speakers, period. Amazon keeps improving the audio performance across its Echo device line, and the ...

8. Walmart Gets Laser-Focused on Lowest Prices Again - AOL

   www.aol.com/2012/03/29/walmart-gets-laser...

   Walmart (WMT) has put out an APB for shoppers: "We have the lowest prices all the time. Period." This week, the nation's biggest retailer detailed its $2 billion plan to "reinvest" in low prices ...

9. Researchers built a low-cost camera system that recreates ...

   www.engadget.com/optical-microphone-camera-laser...

   Researchers at Carnegie Mellon University have developed a camera system that can seemingly detect sound vibrations with a level of precision that makes it possible to recreate the audio without ...