What's the Point of AI Detectors?

I think i've seen these advertised

They look a bit like metal detectors, except they are all fluffy, similar to a feather duster.

Apparently, you hold them slightly above your PC, laptop or server and they automatically detect if any ai present in the system.

The things they come up with these days,

The next thing they will be telling us is that ai is intelligent and just like humans.