Regulation can be made very broad and up to interpretation by judges though.
You could setup something like "Circumvention of facial recognition using dedicated technical devices at demonstrations is considered disguising at a demonstration and follows the same laws" in germany.
And sure, this would result in a lot of lawsuits, discussions, escalations through different courts while the regulation is being tested - and it might be struck down entirely - but it would stand for a while and strike down _all_ workarounds.
You could setup something like "Circumvention of facial recognition using dedicated technical devices at demonstrations is considered disguising at a demonstration and follows the same laws" in germany.
And sure, this would result in a lot of lawsuits, discussions, escalations through different courts while the regulation is being tested - and it might be struck down entirely - but it would stand for a while and strike down _all_ workarounds.