That’s very different from an accessory like glasses, which are typically on somebody’s face all the time, whether or not they’re being used for photo functionality, with a hidden camera constantly pointed at whoever they’re talking to or whatever they’re looking at. You may never know that a photo or video or other recordings of you, of your property, of your company secrets, of national security, etc are imminent or already taking place.
“What’s the real difference” is kind of absurdly obvious, yes?