And here's some code I was mucking around with: https://dotnetfiddle.net/lSHie4 https://dotnetfiddle.net/lSHie4 A couple of things caught my interest so far a

And here's some code I was mucking around with: https://dotnetfiddle.net/lSHie4 https://dotnetfiddle.net/lSHie4 A couple of things caught my interest so far as possibles: http://en.wikipedia.org/wiki/International_Securities_Identification_Number http://en.wikipedia.org/wiki/International_Securities_Identi... http://en.wikipedia.org/wiki/Base_36#Uses_in_practice http://en.wikipedia.org/wiki/Base_36#Uses_in_practice