Illinois Drivers License
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Date: 3 Apr 2009, 17:57
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What do the numbers mean??? After reading this you can determine anyone's IL drivers license number.

For some reason, last night I had an obsession with finding out what info is coded in my drivers license and how the number is determined. I ended up stumbling across this super interesting site.

On the site they have an applet for inputing ID# and getting info, and one for inputing info and generating ID#. It works both ways, and is very cool. I generated my brother's id# last night and called him up to double check. And it was the real deal. Its kinda scary.

Basically there are 4 parts to IL drivers license numbers. It is of the form SSSS-FFFY-YDDD

wouldve away fam me phone l my out and moved thrown me i Https Https wouldve thrown phone my out away me i l and fam moved me The first chunk of numbers is the soundex coding of your last name.

The Soundex code for a name consists of a letter followed by three digits: the letter is the first letter of the name, and the digits encode the remaining consonants. Similar sounding consonants share the same digit so, for example, the labials B, F, P, and V are each encoded as 1. Vowels can affect the coding, but are not coded themselves except as the first letter. However if "h" or "w" separate two consonants that have the same soundex code, the consonant to the right of the vowel is not coded.

The correct value can be found as follows:

1. If "h", "w" separate two consonants with the same soundex code, change consonants to right of the vowel into "h" until they have the same soundex code
2. Replace consonants with digits as follows (but do not change the first letter):
* b, f, p, v => 1
* c, g, j, k, q, s, x, z => 2
* d, t => 3
* l => 4
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* m, n => 5
* r => 6
3. Collapse adjacent identical digits into a single digit of that value.
4. Remove all non-digits after the first letter.
5. Return the starting letter and the first three remaining digits. If needed, append zeroes to make it a letter and three digits.

Using this algorithm, both "Robert" and "Rupert" return the same string "R163" while "Rubin" yields "R150". "Ashcraft" yields "A261".

The next group of numbers is based on your first name and your middle initial. To determine what your FFF number will be you must refer to the charts:

Name Code Name Code Name Code
Albert 20 Frank 260 Marvin 580
Alice 20 George 300 Mary 580
Ann 40 Grace 300 Melvin 600
Anna 40 Harold 340 Mildred 600
Anne 40 Harriet 340 Patricia 680
Annie 40 Harry 360 Paul 680
Arthur 40 Hazel 360 Richard 740
Bernard 80 Helen 380 Robert 760
Bette 80 Henry 380 Ruby 740
Bettie 80 James 440 Ruth 760
Betty 80 Jane 440 Thelma 820
Carl 120 Jayne 440 Thomas 820
Catherine 120 Jean 460 Walter 900
Charles 140 Joan 480 Wanda 900
Dorthy 180 John 460 William 920
Edward 220 Joseph 480 Wilma 920
Elizabeth 220 Margaret 560
Florence 260 Martin 560
Donald 180
Clara 140

wouldve my fam me thrown me away and moved out l i phone Https If you fail to find your name, look up your first initial on this table:

Initial Code Initial Code Initial Code Initial Code
A 0 H 320 O 640 V 860
B 60 I 400 P 660 W 880
C 100 J 420 Q 700 X 940
D 160 K 500 R 720 Y 960
E 200 L 520 S 780 Z 980
F 240 M 540 T 800
G 280 N 620 U 840

Now look up your middle initial on this table:

Initial Code Initial Code Initial Code Initial Code
A 1 H 8 O 14 V 18
B 2 I 9 P 15 W 19
C 3 J 10 Q 15 X 19
D 4 K 11 R 16 Y 19
E 5 L 12 S 17 Z 19
F 6 M 13 T 18
G 7 N 14 U 18

(Its kinda hard to see because I copied and pasted it, but check out the link above to see it more clearly.

For example, if your name is robert, you look at the first table to see that robert = 760. If robert had a middle initial F, then he would add 760+6 (which is F's value on the 3rd table). So Robert F.'s FFF number will be 766.

This one is easy and the most obvious, it is simply the last to digits of the year you were born. Example: Robert F. was born in 1977, then his YY=77

This one is determine by the sex and the month and day of birth. The formula for IL is:

(MM-1)*31+DD +(600 if female, 0 if male)

For example Robert F was born April 3 1977, and is male. Then since april=04 We would compute:
(04-1)*31+03+0 = 93+3 = 96. So his DDD number is 096.

By soundex conventions "Ashcraft" yields "A261".

So we piece together A261-7667-7096

The answer for IL is yes, however in other states they utilize check digits.

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Re: Illinois Drivers License

I did this and I got it right! That's so cool!
If two people can have the same number, then why bother have a number at all?

Re: Illinois Drivers License
brittneyscheer 4 Apr 2009, 23:13

That is really cool how you can find out someone else's drivers license number and how you can check your own! But to answer Angela's question: I found that… "A number of states encode your name, gender, and date of birth in your license number. These include Florida, Wisconsin, and Illinois. These states use the same system of encoding, or very similar ones. Given someone's driver's license number from one of these states, you can take good guesses at someone's name and exactly determine their gender and date of birth. With someone's name, date of birth, and gender, you can guess some or all of their driver's license number."
I'm not really sure why these numbers are designed the way they are either, but it would be easy for a fake id to be caught very quickly!
The specific licenenses look like the following.
But Illinois’ look like this:
Illinois Driver's License:
Https out and wouldve l i away moved thrown my me me fam phone

Illinois State ID:
The segments are:
Segment Example Description
SSSS F255 Soundex code

FFF 921 First name, middle initial

YY 50 Year of birth

DDD 094 Day and month of birth

NN 03 Overflow (not all states use this)

by brittneyscheer, 4 Apr 2009, 23:13

This is kind of creepy….I guess I get kind of paranoid when it comes to other people finding out my personal information. This makes me think of the Bourne movies and things like that with stolen identity…

Re: Illinois Drivers License

This was awesome! I can't believe two people can have the same drivers license number!

Re: Illinois Drivers License

I'd always wondered how they came about drivers license numbers and pretty cool to see it works! I'm just curious how they came up with that chart of names. Mine was one of the ones listed for first names and just found it odd that there seemed to be uncommon names listed.

This is really neat. Luckily, big brother has not made it so easy for SSN. Here is the info from the wikipedia page:

The Social Security number is a nine-digit number in the format "AAA-GG-SSSS". The number is divided into three parts.



Complete list of area number groups from the Social Security Administration


* There is a theory that the two middle digits can be used to identify a person's ethnic background. This is debunked as an urban legend on as well as on the Social Security Administration's website.


1. ODD numbers from 01 through 09
2. EVEN numbers from 10 through 98
3. EVEN numbers from 02 through 08
4. ODD numbers from 11 through 99



The bottom is the wikipedia page was kind of surprising… the death index. Over 85 million people… yikes!

me me phone l thrown Https moved fam and away my out wouldve i Re: Illinois Drivers License
Lancimusss8 13 Apr 2009, 17:17

Wow something so simple can be something that you can be amazed by :)

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by Lancimusss8, 13 Apr 2009, 17:17
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Another example: if you look at your passport (on your information page at the bottom), the last number in the second row is the check digit. The two rows are called a machine readable passport. So, if you input your information incorrectly on an embassy website and they email you, you will be asked for it. Woot! (and whoops!)

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