Qualification:
I’ve heard various rumors, some of which seem to be true, such as that the phone works even when it’s turned off and maybe records all the time you’re talking, and with neural networks you can find out what you said, even if you were ten meters away from the phone and in another room, you can use the neural network to improve the sound quality and still know What did you say.
There is also information that the phone can see through objects, so gluing something to the camera will not help.
I don’t know what to do, I’m scared. Do you have any ideas on how to save myself from this if I live in the city and use my smartphone?
Sony once sold a video camera that could sort of do that under specific circumstances.
Cameras usually have a filter to block infrared light, but that camera offered the ability to toggle the filter to improve the camera’s performance in low light. Hobbyists also sometimes modify cameras to remove their infrared filters for artistic effect or to photograph animals at night without disturbing them with visible light. Some clothing is not fully opaque to infrared light, so an IR camera can sometimes capture some detail of what’s underneath. Adding a filter that reduces visible light and passes IR might increase the effect.