I found a very good system used by European banks. It's called the Swift code/BIC, BAN.
This is a very good idea as swift and IBAN are used everyday for serious business.
But practical implementation poses problems as these are 24 digit large numbers.
Large numbers are difficult to put in a VISA like plastic or paper card in a way that still permits grouped large and easy reading typefaces as VISA has.
Large numbers are time consuming and error prone to type. That was why they needed the extra 2 digit checksum in the first place.
If only would could find or invent a compromise solution...
The idea of having additional numbers to confirm that the main account is correct is very nice.
I agree.
And the default bar coding system of a Care2x hospital installation should always count on them.
That way, if the bar code reader is unavailable or is malfunctioning, the operator should be able to easily type in a number without necessarily worrying if he is typing it well or wrong. The checksum would take care of that.
That's what is being done for decades with the barcodes printed in goods that we daily buy at a grocery or supermarket.
J. Antas
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