For my first key, I tried to get it cut at nissan with the code and it totally didn't work, F'd it up. The second time, I went to a normal locksmith who had a standard key duplicator machine that had ZERO issue with the titanium. $4 dollars and I was out the door. So nothing to worry about, just don't get it cut @ nissan with code. Get it duplicated off another key (which they should make a test key first to replicate better on the titanium).