How to Lock Your Capital One Credit Card

To prevent anyone making new purchases using your card, in case of its lost; and to secure your money, you need to do these immediate actions.
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• Open the app by tapping on it. 
  
• Once the app is open, sign in with your username and password.
  
•  After that, tap on the credit card you want to lock. 
  
• On the screen, scroll down to the bottom. There you will see a section that says "Need Help?".
  
• Under Need Help, you will see Lock Card Icon. Tap on the Lock Card Icon. 
  
• At the top of the screen, you will see a question that says "Lock Card?". 
  
• To continue, tap on the Lock Card Button.