The Security Image is a tool that prevents people from using a script (computer program)
to create many accounts that they would then use for malicous purposes.
Since a computer can't read the slightly mangled text in the image Numismatic Cabinet
can tell that you are a real person. If you mis-type the "word" in the image
you will get another change to enter it. You will get as many chances as you need
to get the word right. Don't fret if you're not sure what one of the letters are,
just make your best guess.