Well here is how to get your registration ID number online.
Step 1: Go to http://registration.elections.myflorida.com/CheckVoterStatus
Enter your information on the first page.
Then enter the security challenge code on the second page.
Step 2: Click on the "Your Absentee Ballot Status"
Then on the results page where you see your name and information there are two links on the right hand side. Click on the one that reads "Your Absentee Ballot Status."
Step 3: Look up in the URL for your registration ID.
Now up in the URL you'll see your Florida Voter Registration ID.
So anyone who knows your First and Last Name, and your Birthday can get your Voter Registration ID and print up a fake voter registration card.