On 12/08/2016 2:57 PM, Sam Silvester wrote: > On Fri, Aug 12, 2016 at 2:17 PM, Jim Birch <[email protected]> wrote: > >> Roger Clarke wrote: >> >> 1. The association between the 12-digit number and the dwelling-address >>> may have been systematically assigned rather than purely random >>> >> Would anyone with any idea of security actually do that? It seems >> completely incredible to me. Like, why have a number at all? >> >> > I believe the last digit of the 12 digits is a check digit (much like a > credit card number), which narrows the space further.
A quick analysis of my 12 digit number indicates that the 3rd, 9th or last could be a simple check digit. -- Regards brd Bernard Robertson-Dunn Sydney Australia email: [email protected] web: www.drbrd.com web: www.problemsfirst.com Blog: www.problemsfirst.com/blog _______________________________________________ Link mailing list [email protected] http://mailman.anu.edu.au/mailman/listinfo/link
