Multi locking doors provide improved security over standard doors. They have multiple locking points to prevent break-ins. Split spindle doors have an outside handle that only engages the hook bolts and requires a key to open from outside once locked. Solid spindle doors allow re-entry without a key if the door is simply pulled closed behind you. PAS 24 doors provide the highest security with secure cylinders and resistance to attacks like lock bumping. Selecting a multi locking door, especially one certified as PAS 24, significantly improves home security.