Comment How Brazil works (Score 4, Informative) 178
Brasil is a communal society; we could care less for individual rights. Heck, if the entire country goes out on the streets naked every February, there is no need for individualism.
That being said, it's really hard to enforce a law in Brasil, mostly because it is a matter of national pride to find a way around the rules. They can put as many transponders as they want, but if all the population gets are tickets, then even the dealerships will have an "unofficial" - official - system to remove the tags.
The same thing happened with DVD players way back. Companies tried to force consumers to only get players for region 7. Except that, when you bought a DVD player, the salesman himself would write a code in a piece of paper that you could use to unlock all the regions.
Of course, if the system is used properly, then people won't bother. They could care less if some random guy knows if they are going to churches or brothels.