Door jammers are devices that are installed in doorways to prevent them from being opened. They work by blocking the space between the door and the frame, which prevents the door from opening. This can be useful for preventing people from entering a room or for keeping criminals out of a building. There are several different types of door jammers available on the market, but all of them work in basically the same way. The most common type is a wedge-style jammer, which is a small device that is inserted into the space between the door and the frame. Other types include magnetic jammers and bar jammers. Magnetic door jammers use magnets to secure the door in place, while bar jammers use a metal bar to keep the door from opening. All of these devices work by preventing the door from moving and allow people inside or outside the room to have a conversation without having to worry about someone trying to eavesdrop. Door jammers are a great way to keep people out of your room or to prevent criminals from entering your building. They are easy to install and can be used in any doorway. Plus, they are relatively inexpensive, so they are a great option for anyone who wants extra security. If you are looking for a way to secure your home or office, then a door jammer is the perfect solution. These devices are easy to use and provide a high level of security, making them a great investment for anyone who wants to protect their property.