No this isn't spam! :)
I'm currently developing a gift voucher system for an ecommerce retailer.
The vouchers may be emailed to customers or printed and sent along with
postage. Either way the administration for creating vouchers will be
through an admin web UI.
Now I was thinking of using a guid in SQL Server for the voucher number
since it will be unique and hard for people to guess a voucher number.
However since these may be printed and sent they may not want to make the
customer type out something like c70c012d-4b14-4eca-bf4b-c484fbaa069c
Is there an easy way of making a unique 9 or 12 character long voucher
number such as h72j3i9c0l1j and still ensure that it will not be a duplicate
number?
Thanks J