I saw a picture of the system, it seems that IEBC have not used the ID number as the primary key in the database, this would reject duplicates.

I suspect IEBC anticipated errors in data capture and avoided using it as the primary key in case it locked
voters out due to the errors. What they should have done is integrate it with the national register so that IEBC clerks and voters can search in real-time and confirm the ID number matches the particulars of the one registering.

Following that 'wisdom' IEBC Chair and CEO are from an opposition zone! So, is the allegation that IEBC is working with the Auditors to cheat the opposition!!

I remain firmly of the opinion that key opposition politicians have their eyes on something else other than free and fair election!

Why is the 9B system failing to detect the dublication of the ID Numbers?
Why not use a centralised database which checks if the ID number has been registered?
How difficult is it to write a code that ensure the ID number is only used once?If you try to reenter gives an error.
Why does immigration department issue IDs with similar numbers?

that is the bigger question! everything else feeds from it!! you cannot refuse to register someone because
NOTE THE TERMS HERE - his/her ID card has a number that has been issued to someone else. You refer those cases to the issuing authority!

It's not IEBC's job to determine whether one number is shared UNTIL it gets told by the issuing authority that it's the case and my question was....
I REPEAT!!

WHO TOLD YOU THE ID NUMBER IS UNIQUE?

has the issuing authority (NRB) come out and said - YES, THEY ARE UNIQUE? and even if they do - IEBC cannot restrict data collection because "your ID number has been used" - what if it's the fraudster who registered first? the best way to handle this is - collect all the data and SEND IT to the ISSUING AUTHORITY and ask them... who between these two persons (or 3) is have you allocated the ID number to? sio mambo na primary keys, unqiue keys... those are database basics!! you apply technology to solve a problem. duplication is not a problem for an overwhelming majority of the cases but when it comes to elections and laws (private sector people listen up - you are the guys that always line up 'solutions' every 5 years to do BLAH BLAH BLAH) the thing you have has to work on 100% of the cases. if you decide to make ID numbers primary then -
1) you need written down assurances from the issuer of the document that they don't issue out duplicated ID Numbers
2) you need a process in place to determine which is valid in the case two occur. remember one can be a result of data capture errors... kwani?

and so I go back to my question

WHO TOLD YOU THE ID NUMBER IS UNIQUE?

In a perfect world, your ID number should be unique since it is a citizens identifier. Look at it from the perspective of a database that contains the identities of the people of this republic.

(Now this is my assumption) In creating a voters register the ID is only useful for the purposes of identification and can only be religiously useful if clean data is ported from the national registry that said, your ID is not really useful for voting as long as you have a voters card and your biometrics were/are captured.

Now on a serious note, Kenya iko shida mingi sana ata data management kwa serikal iko na itilafu....pesa za wazee zina peanwa aje?