I need a line of html code which will tell a bar code generator to provide a unique (sequential if possible) number to each visitor to a web page...and prevent duplicate requests.
This is what I have been using to do an email with the code in it. But, it requires me to have the name and number associated in the database.
[url removed, login to view];%[fld_Barcode]%
I need one which just provides a new number for every visit...and prevents numbers being given to the same visitor twice.
It is a coupon and I only want one coupon per person.
Can you help?