For public ones, depending on what people started getting, it’d really strain the AIs. You could go in like 1 or two ways, probably different people getting both.

Something very uniform but still unique, like a QR code kind of deal, AIs would hallucinate the crap out of that. Or abstractions, like people do to change the way the shape of their face to combat facial recognition.

For private ones, just don’t ever get it photographed, any image showing that area without it would be probably fake.

I am waiting for people to start getting both public and hidden authentication tattoos, so they can prove generative images aren’t actually them.

The proprietary/cloud based threat bit me already. Installed smart vents in my home several years ago. They weren’t perfect, but they did really help even out my 3-bedroom, 2-story, 1-zone home. Now the app fails to login, the site doesn’t even attempt password recovery and I’m back to dumb vents… Customer support is a black hole and basically every product is and has been out of stock for years, so I’ve no hope of any happy resolution.

They apparently used to be supported by SmartThings when it allowed custom stuff, but that’s dead now too because Samsung didn’t want to allow it. I even tried to use their proprietary hub which said it could connect to them, but that shit didn’t work either.