Uploaded July 2024 | Updated September 2026, 1 day ago
Many smart home devices use a type of microphone with an unusual property - shining a laser light on the speaker and varying the frequency causes the microphone to "hear" sound.
This means you issue commands to the Alexa that it will "hear" as sound, allowing you to interact with the device through a window or anywhere with direct line-of-sight.
If you don't want a stranger ordering 10,000 bags of cheetos to your house through your window, it might be wise to keep your smart home speakers out of view.
Many smart home devices use a type of microphone with an unusual property - shining a laser light on the speaker and varying the frequency causes the microphone to "hear" sound.
This means you issue commands to the Alexa that it will "hear" as sound, allowing you to interact with the device through a window or anywhere with direct line-of-sight.
If you don't want a stranger ordering 10,000 bags of cheetos to your house through your window, it might be wise to keep your smart home speakers out of view.
