Door Bull Door Barricade Security Device
The Door Bull adds an additional layer of security to your home, reinforcing locked doors at their frame, and creating a barricade much stronger than your lock and bolt alone. Installed on either side of an inward-opening door, the Door Bull distributes force placed against the door frame, such as from a crowbar or foot, more evenly and at appropriate angles. The door is then less likely to buckle or split at the contact point.
Developed by law enforcement officers who "saw too much tragedy from normal locks," the Door Bull should be a pretty quick DIY install, with all parts, hardware, and the drill bit you'll need to mount its plates included.