How to design identifiers for items in a list?
I have to dump data from user queryes and list the data for a command line interface. Users then operate with the listed data, like bookmarking some rows.
for example:

        3423040 - JHON - "MESSAGE" ;
        3453021 - MICHAEL - "MESSAGE" ;
        
    input> bookmark 3423040

obviously, this is not user friendly, what kind of representation of that identifier i should use? Some kind of string representation?
How to design identifiers for items in a list?
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I have to dump data from user queryes and list the data for a command line interface. Users then operate with the listed data, like bookmarking some rows.
for example:

        3423040 - JHON - "MESSAGE" ;
        3453021 - MICHAEL - "MESSAGE" ;
        
    input> bookmark 3423040

obviously, this is not user friendly, what kind of representation of that identifier i should use? Some kind of string representation?