Universal Ids have fatal problems with them unless they are some form of robust biometric.
DNA chip? It could be the solution.
But then again, you would need some kind of probe to read it.
And if you use a probe (mechanical, electronic, biologic, or any
combination of these) you will have to deal with the classical
"key<-->lock" problem.
I.e., if you have a lock that needs a key to open it, you immediately have to deal with a new problem: with enough time and resources someone else will be able to reverse engineer (or otherwise) your lock and/or
key mechanism and make a key that works on your lock.
So, the concept of "robust biometric" would need something else besides
DNA.
Perhaps some sort of Schroedinger's cat box with a quantic physics
derived mechanism of some kind. If you interfere with it or if you just try to look at it... you change it to something completely different... and that happens each time that you make a new try.
Arguing over things like the number of digits needed in a UID is a waste of time.
I agree. Although some practical issues must be taken in consideration. If you stick with a VISA clone (card dimensions, character typeface, number of characters to be printed), it will be far easier and cheaper to find a 3rd party plastic card maker and/or plastic cards press machine to able to produce the cards for your hospital or clinic.
Unfortunately healthcare and healthcare related matters are full of these little, although critical, practical aspects that must be dealt with.
J. Antas
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