https://www.webmaster-forums.net/crss/node/1020903 en https://www.webmaster-forums.net/html-css-and-javascript/tracking-gift-certificate-purchases-website#comment-1128505 <p>Generate a random unique number for each printout and keep track of which ones have been used. I would guess that some company offers this as a specialized web service that your company could use. Try searching Google maybe.</p> Fri, 04 Apr 2003 22:52:58 +0000 palantir comment 1128505 at https://www.webmaster-forums.net