It sometimes seems the entire world has become overly paranoid about privacy. While there are certainly concerns about perverts, stalkers and criminals taking photos for illegitimate purposes, I think this is an overreaction to their loss of privacy in most other areas, such as in the on-line and corporate worlds.
You can't fight the Internet; if you want to use it you have little choice about giving up your privacy. You can't fight credit card companies, credit reporting agencies, franchise retail stores or even government agencies from collecting your personal details. You can choose to avoid them, but if you can't you have no option but to accept their terms.
All that is left is to challenge individuals you meet face-to-face.
At least that is how it is in the USA. I understand our friends in Europe and other regions have more consumer-friendly laws. But in the US your personal info is as good as currency among corporations.