[Koha-devel] Curiosity why is cardnumber field size 16?

Hi all, I'm curious to know why is Koha's cardnumber field in borrowers table is historically set to VARCHAR(16) rather than say VARCHAR(255)? Especially since we now have the CardnumberLength syspref which we could use to drive the length rather than hardcode it down at 16. The background of this question: Schools in Nigeria use a matriculation number which is often larger than 16, as their cardnumber. Zeno did mention to me in a FB post that ExtendedPatronAttribute would equally do the job. Thoughts? -indranil -- Indranil Das Gupta L2C2 Technologies Phone : +91-98300-20971 Blog : http://blog.l2c2.co.in IRC : indradg on irc://irc.freenode.net Twitter : indradg