Originally Posted by SoKalFocus
All I did was take my ONE key from my used 2006 ZX3 to a lock shop and bought another key and remote....they programmed both in like a minute.
If they did it without physical access to the car, all they did is a key clone then. Basically you have two "#1" keys instead two uniquely coded ones. Makes no difference day to day but you're in the same position if you wanted to program a third.