South Pasadena - Lock Replacement Lost keys can also pose a threat as if someone picks up your lost key, chances are they might plan on burglary soon. In cases when burglars entered your property by an open window or door, you will realize that your keys might be missing which makes you conclude that intruders can access your home anytime and that your house has no protection from your home insurance if later on, a break-in occurs with the use of your missing spare keys by these burglars. In such cases, you will need a 24-hour emergency locksmith to respond to your immediate need. Once a crime occurs on your property, contact an emergency locksmith right away!