How to activate your new card
To activate your new card, you have to be enrolled in online banking. Have your card handy, too. You’ll need to enter the 3-digit security code on the back to activate it.
If you already have a Capital One credit card
You’ll need to link your new credit card account to your existing one. Just follow the directions under Consolidate Your Accounts.
Once you’ve linked your credit card accounts, you can activate your new card.