Who will accept ID cards?

[Adrian Midgley]

Roland Perry wrote:
> In article <4A71DE42.1000003 at gmail.com>, Adrian Midgley
> <amidgley at gmail.com> writes
>> If it is my surgery, then the staff door might be given a list of ID
>> card numbers, and told to admit those.  For that matter, the patient
>> door might be given a longer list.
> 
> So your door has to have a Chip reader, and the necessary means to
> decrypt the information in the chip (assuming the ID number is indeed
> encrypted, or even stored on the chip).
> 
> And you have to have a means to load the door up with a list of
> authorised ID numbers.
> 
> And you have trust that no-one passes their ID card to anyone else,
> because you didn't propose that the door checks the biometric.


Is this different to keys?