How It Works:

CardLock enables cardholders to directly control whether to block or not block a transaction from proceeding. When a cardholder locks their account with CardLock, any attempt to authorize a transaction on that account will be declined and no charge will occur. In addition, the cardholder will get a call or alert from the fraud department that a transaction has been attempted on their locked account.

Note: Recurring transactions, such as a fitness club membership, will not be declined, even if the cardholder has locked the account.

You may lock and unlock your account via phone or CardLock’s web site.

Locking or Unlocking via Phone (for accounts already enrolled)

1. Call 877-285-6251 (877-CULOCK1)
2. Select the option to lock or unlock an account.
3. Enter the 4-digit security key code when prompted; listen to current account status.
4. Select the option to change the lock status as desired.

Locking or Unlocking via Web (for accounts already enrolled)

1. Go to www.cucardlock.com.
2. Enter username and a password.
3. Click the “Lock/Unlock Cards” button; list of locked/unlocked accounts displays.
4. Select account to lock or unlock; enter 4-digit security key code.
5. List will display updated card status.