I guess I should have been more specific. Some manufacturers (Honda) among them install anti-theft tracking devices. They apparently increase the probability of tracking stolen vehicles.
They stuck it inside my mom's brand new CRV, but that I could understand, it's brand new.
In my case, a 3-year old Accord is also equipped with one, and I am pretty sure that the person who leased it, had paid for it. I don't know for certain though, but I am pretty sure that they included it in the lease cost.