Add to that, the lack of agency that a hidden camera gives. There’s the real issue; being unaware of being filmed by a possible pervert and not having the ability to request it stop or move away
This is even worse when it comes to the filming of children. Considering the market for children's images on the dark web and so on, we really should not be having second thoughts about these bloody spying tools. I don't know if these glasses have zoom capacity but if they do it would be easy, for example, for some sleaze to be filming young children on play equipment from a distance and neither guardians nor children be aware. There could be some many other instances. We must protect the children.