For Security Booth: Director’s Cut players, this guide will provide All license plates list for “Pro Guard” Achievement, let’s check it out.
If you examine license plates on the terminal you will see a pattern going on there.
It always goes like this:
Letter – Letter – Number | Number – Number – Letter
AB1 23C ->Fine
AB1 C23 -> Not Fine
There are also special plates like GUD DAY, HOT ROD, FAT CAT, so far all these plates are fine to go in.
I believe sometimes good plates may not be in the list, can take a few tries. I got it on the 2nd try.