> Not going to last very long, though; ultrasound filters will soon appear on all relevant gear, including mobile phones. Only if this technique actually gains

> Not going to last very long, though; ultrasound filters will soon appear on all relevant gear, including mobile phones. Only if this technique actually gains widespread use. Even then, it will most likely only appear on gear that must still record, such as body cams. For consumer tech, this would just be additional costs, which the manufacturers are not going to bother with.