As for opting out? I think the only chance you have is to have zero online presence, especially with pictures. Of course, many are forced into this by their careers.
Optionally pulse-modulated in specific ways, to make the software behind those crash by inducing cyber-epilepsy.
IOACM (infrared optically active countermeasures)
I get it could be mildly to very annoying depending on what's available on you online - but not leaving the house ? The only things that come to mind are you have a hit on you and you did an identity change to ditch it or some thinfoil hat level theory.
The way I see this is this is all being done for over a decade now we are just making it more widespread. In some ways I find it a good thing - where previously the government could track you through security infra, now the government servants are also surveiled in all public appearances.
If we're inevitably going in this direction, might as well have the same rules for everyone.
How am I meant to opt out of this? A device that broadcasts an (inevitably ignored) do not scan signal? CV Dazzle? Am I resigned to just never leaving the house again?
For now I’m hoping that the major factor against people adopting this is that you’ll look like a wanker. I’m not sure what to do once that becomes the norm though.