> Right, so your Firstname is A and your Lastname is D. There's no ambiguity there. You are offering your own unique technical solution to a cultural problem t

> Right, so your Firstname is A and your Lastname is D. There's no ambiguity there. You are offering your own unique technical solution to a cultural problem that has already been solved, and while I admire your confidence, I must explain why it is incorrect. I don't have a "last name", I have two surnames. The notion of "last name" implicitly assumes that there is one and only one surname. As I already hinted at, people in Spain customarily use their first surname as their "last name". That's why 90% of communications address me as A C, even while living in Canada. It is my understanding that the same rule is used in all of Latin America, including Brazil.