Re: Pros and Cons
Here in Spain the National Identity number is used for everything. I was going to sign for a package being delivered to the company I work for but for another department, the driver wanted my NIE so I told him to find someone else to sign. Even ordering goods by phone your name is not enough, they want your number too.
Oddly purchasing online via Amazon or Ebay doesn't require it even when purchasing expensive goods.
Even the banks here don't really get security so my number is strictly for government use only.