When you purchase Norton Antivirus online then you will get a 25 digit activation code at your registered email Id. If you buy Norton Antivirus from local store or best buy store they gives you a retail card. The Retail card contains 25 digit unique activation code which will you to redeem the Norton Antivirus. Once you activated then you can create the Norton account and download to setup successively. For more info: www.nortoncom-setups.com