I don't think a cash economy will help. Pretty soon, maybe sooner if a cashless economy doesn't take hold, they'll use facial recognition to track who purchases

I don't think a cash economy will help. Pretty soon, maybe sooner if a cashless economy doesn't take hold, they'll use facial recognition to track who purchases what to bypass any cash transactions. The solution has to be a strangthening (new) right not to be tracked which should be on by default. This may then be traded away by free services (gmail, facebook, etc..) but it would be a step in the right direction.