[Default] On 21 Apr 2020 22:43:34 -0700, in bit.listserv.ibm-main
[email protected] (Timothy Sipples) wrote:

>Mark Jacobs wrote:
>>The Social Security Administration does not reuse Social Security
>>numbers. It has issued over 450 million since the start of the
>>program, and at a use rate of about 5.5 million per year. It says
>>it has enough to last several generations without reuse or changing
>>the number of digits.
>
>The Social Security Administration could easily give 20 years of advance 
>warning before expanding their number space if they wish. They've got 
>several options before that far distant future, such as:
>
>1. Allowing capital letters except those that can be confused with numeric 
>digits. That'd likely mean excluding B, D, F, G, I, L, O, Q, S, T, U, Y, 
>and Z if they want to be maximally cautious. That still leaves 13 letters 
>available, or 14 if they want to include the symbol representing the 
>artist formerly known as Prince. :-) They'll also probably have some 
>placement exclusions to avoid spelling out any words. Even with these 
>restrictions, the character space is vast.

The fun would come for programs like the now retired payroll programs
I wrote that stored social security numbers as packed decimal.

Clark Morris
>
>2. Alternatively, and in an overlapping period, some brand new digital 
>identity scheme.
>
>- - - - - - - - - -
>Timothy Sipples
>I.T. Architect Executive
>Digital Asset & Other Industry Solutions
>IBM Z & LinuxONE
>- - - - - - - - - -
>E-Mail: [email protected]
>
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