This could be implemented as high default prices + steep discounts for people with tracking apps/cards. It's already happening. Luckily they can't raise the d

This could be implemented as high default prices + steep discounts for people with tracking apps/cards. It's already happening. Luckily they can't raise the default prices too much, cause people without apps/cards will go someplace else. But with data like face recognition, it will become more prevalent, absent personal data regulation like the EU GDPR.