[Cryptography] Possible reason why password usage rules are such a mess

[Jeremy Stanley]

On 2020-03-05 21:35:27 +0000 (+0000), Howard Chu wrote:
> On Wed, Mar 4, 2020 at 9:58 AM Peter Gutmann <pgut001 at cs.auckland.ac.nz <mailto:pgut001 at cs.auckland.ac.nz>> wrote:
[...]
> > why does my driver's license, which proves who I am, not work
> > for getting on an airplane if the license is expired...I can
> > understand if they won't let me fly the plane with an expired
> > driver's license, but I'm just planning on being a passenger.)
> 
> This one is easy - you can't travel with an expired photo ID
> because the possibility exists that someone else is already
> traveling with the valid ID.

Except that authorities (at least in my country of residence) are
happy to issue duplicate/replacement/extra photo identification
under a wide variety of circumstances. Heck, one person could be
flying with my passport whilst another flies with my driver's
license and another with my military ID (if I had one, which I
don't).

Alternative theory: if you don't require people to get photo IDs
reissued with some periodicity, the photo looks less and less like
the person over time.
-- 
Jeremy Stanley
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