What is the best way to ensure the security of my front door with a lock and key system?

The best way to ensure the security of your front door with a lock and key system is to use a high-quality deadbolt lock, install a reinforced strike plate, and make sure to use a key that is not easily duplicated. Additionally, consider adding a doorbell camera or a smart lock for added security. Regularly check and maintain your lock to ensure it is functioning properly.