In Canada, you get a unique code (for that year) physically mailed to your address from the 2013 return (unless you change addresses). If you change addresses i

In Canada, you get a unique code (for that year) physically mailed to your address from the 2013 return (unless you change addresses). If you change addresses in a tax year, you can't file electronically. It's not technically a PIN as there are letters in the code. Basically, we have a similar system to your second type.