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Door chain. A door chain, security chain, or security door chain or chain door interviewer [1] consists of a small chain attached to the door frame, which attaches to a track on the door for security purposes. It is a type of lock that is often used along with other types of locks to secure a door. [2] They are commonly used on hotel and motel ...
A doorstop (also door stopper, door stop or door wedge) is an object or device used to hold a door open or closed, or to prevent a door from opening too widely. The same word is used to refer to a thin slat built inside a door frame to prevent a door from swinging through when closed.
In other words, stop it from closing shut, slightly or all the way—just like you might use a freestanding door stop for the same effect. The way to do it is easy; some even say embarrassingly so.
Door viewers — small fish-eye lenses that allow residents to view outside without opening the door. Door windows — there are three common methods to add security to windows in or beside doors: security bars and grates, security films (coatings applied to the glass in windows to reinforce it), or breakage resistant windows (plexiglas, lexan ...
1. a slot in a wall or door through which incoming post [DM] is delivered (US: mail slot, mailbox) 2. (less common) a box in the street for receiving outgoing letters and other mail (more usually called a postbox or pillar box) (US: mailbox) See also Letterbox (US & UK): a film display format taking its name from the shape of a letter-box slot
Another type of lock also called a police lock and also formerly made by the Fox Police Lock Company is the crossbar police lock. It features two steel bars across the width of the door and beyond, held by two brackets set in the doorframe. [1] [3] When the door is unlocked, the bars are moved inwards to the point of being withdrawn from the ...
A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school. Security alarms protect against burglary or property damage, as well as against intruders. Examples include personal systems, neighborhood security alerts, car alarms, and prison alarms.
In security, piggybacking, similar to tailgating, refers to when a person tags along with another person who is authorized to gain entry into a restricted area, or pass a certain checkpoint. [1] It can be either electronic or physical. [2] The act may be legal or illegal, authorized or unauthorized, depending on the circumstances.