I've solved the problem a different way - a year or so ago I publicly declared my life "performance art" - New Zealand law protects artistic performances and prohibits recording of them without first obtaining a license
Theoretically security cameras must shut off before I pass by in the street
Oh I simply tweeted it ... at the moment it's a rather tongue-in-cheek position, but traditionally here one would place an ad in the "Public Notices" section of the local newspaper.
I've considered doping that just to publicly raise the issue - really we should all having public discussions about these issues before they are deployed, not after
Theoretically security cameras must shut off before I pass by in the street