Door security
Encyclopedia
Door security relates to prevention of door
Door
A door is a movable structure used to open and close off an entrance, typically consisting of a panel that swings on hinges or that slides or rotates inside of a space....

-related burglaries. Such break-ins take place in various forms, and in a number of locations; ranging from front, back and side doors to garage doors.

Common residential door types

The following are the types of doors typically used in residential applications: solid wood door, panel doors (hollow and solid core), metal skinned wood-edged doors and metal edge-wrapped doors. Typically, door frames are solid wood. Residential doors also frequently contain wood.

Security weakness of common residential door types

Security tests by Consumer Reports Magazine in the 1990s found that many residential doors fail
Ultimate failure
In mechanical engineering, ultimate failure describes the breaking of a material. In general there are two types of failure: fracture and buckling. Fracture of a material occurs when either an internal or external crack elongates the width or length of the material. In ultimate failure this will...

 or delaminate
Delamination
Delamination is a mode of failure for composite materials. Modes of failure are also known as 'failure mechanisms'. In laminated materials, repeated cyclic stresses, impact, and so on can cause layers to separate, forming a mica-like structure of separate layers, with significant loss of mechanical...

 when force
Force
In physics, a force is any influence that causes an object to undergo a change in speed, a change in direction, or a change in shape. In other words, a force is that which can cause an object with mass to change its velocity , i.e., to accelerate, or which can cause a flexible object to deform...

 is applied to them. Solid wood doors withstood more force than the very common metal skinned wood-edged doors used in newer construction. A broad range door manufacturer, Premdor (now Masonite) once stated in one of its 1990s brochures entitled "Premdor Entry Systems" page 6 that "The results of tests were overwhelming, Steel edged doors outperform wood-edged doors by a ratio of 7 to 1 When you consider the practically two-thirds of all illegal entries were made through doors... One hit of 100 lb [lbf] strike force broke the wood-edged stile and opened the door. To actually open the steel-edged door required 7 strikes of 100 lb pressure [force]." Most door manufactures offer a number of different types of doors with varying levels of strength.

Consumer Reports Magazine
Consumer Reports
Consumer Reports is an American magazine published monthly by Consumers Union since 1936. It publishes reviews and comparisons of consumer products and services based on reporting and results from its in-house testing laboratory. It also publishes cleaning and general buying guides...

 also reported in its test results that door frames often split with little force applied and lower quality deadbolts simply failed when force was applied to the door.

The Chula Vista Residential Burglary Reduction Project which studied over 1,000 incidents; "We also learned what prevention techniques seemed to have little effect on whether a burglary would be successful. Methods found to have relatively low effectiveness included: sliding glass door braces, such as wooden dowels, as opposed to sliding door channel or pin locks; deadbolts installed in the front door only; and outdoor lights on dusk-to-dawn timers... burglars typically ransacked or vandalized at least 25% of the homes they burglarized..."

Burglary tactics

The Chula Vista Residential Burglary-Reduction Project yielded the following findings: "From victim interviews, we learned that in 87% of the break-ins that occurred when intruders defeated locked doors with tools such as screwdrivers or crowbars, the burglars targeted "the one door that had no deadbolt lock ... not one burglar attempted to break a double-pane window during the course of successful or attempted burglary."

Door security devices

  • Alarm
    Alarm
    An alarm device or system of alarm devices gives an audible or visual alarm signal about a problem or condition.Alarm devices include:* burglar alarms, designed to warn of burglaries; this is often a silent alarm: the police or guards are warned without indication to the burglar, which increases...

    s — designed to warn of burglaries; this is often a silent alarm triggered when a door is opened while the alarm is active and the police or guards are warned without indication to the burglar, which increases the chances of catching him or her.

  • Burglar Deterrent CDs — Home occupancy sounds recorded on a CD. The CD is played when the home owner is away, to mimic the home occupancy activities.

  • Deadbolt
    Deadbolt
    A dead bolt or dead lock , is a locking mechanism distinct from a spring bolt lock because a deadbolt cannot be moved to the open position except by rotating the lock cylinder. The more common spring bolt lock uses a spring to hold the bolt in place, allowing retraction by applying force to the...

    s — many manufacturers make deadbolts that are resistant to impact failure, picking and lock bumping
    Lock bumping
    Lock bumping is a lock picking technique for opening a pin tumbler lock using a specially crafted bump key. One bump key will work for all locks of the same type.-History:A US patent first appears in 1928 by H.R. Simpson called a "rapping" or bump-key...

    . However, most deadbolts are not very secure. Consumer Reports Magazine's testing showed that many manufacturers make deadbolts that break apart and otherwise fail when force is applied to the door.

  • Door strike reinforcers — In general there are two products: frame reinforces, made to prevent delamination and or splitting of the door frame, and strike plate
    Strike plate
    A strike plate is a metal plate affixed to a door jamb with a hole or holes for the bolt of the door. When the door is closed, the bolt extends into the hole in the strike plate and holds the door closed...

     reinforcers, made to prevent the strike plate from being ripped out of the frame. Frame reinforces are metal strips installed vertically on or behind the door frame, on the hinge side they are known as Birmingham bars and on the strike plate side are known as London bars. Strike plate reinforcers secure the deadbolt pocket beyond the thin door frame material, directly to the stud or other wall.

  • Door reinforcements — various products are made to prevent delamination and or splitting of the door. Sheet steel plate can be placed behind or under the deadbolt and wrap the door edge to prevent breaking the door around the deadbolt. Heavy duty products that place plates on either side the door tied together with screws or bolts prevent can be used to prevent delamination.

  • Door chain
    Door chain
    A door chain, security chain, or security door chain consists of a small chain attached to the door frame, which attaches to a track on the door for security purposes...

    s — allows the doors to be opened slightly to view outside while still remaining locked.

  • Secondary, internal locks — sliding bolts, hooks and specialty latches, metal blocks or bars mounted internally.

  • Door viewers
    Peephole
    A peephole is a small opening through which one may look.In a door, a peephole allows people inside the security of seeing outside without opening the door...

     — 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, and other glass replacement products).

  • Hinge screws — longer or specialized screws that prevent the door from being simply pushed in after removing the hinge pins.

  • Sliding door / patio door locks — there are numerous specialized products to prevent sliding doors from being defeated easily.

  • Visibility — Most police departments recommend shrubs be cleared from near doorways to reduce the chance of a burglar being hidden from public view.

See also

  • Access badge
    Access badge
    An access badge is a credential used to gain entry to an area having automated access control entry points. Entry points may be doors, turnstiles, parking gates or other barriers....

  • Access control
    Access control
    Access control refers to exerting control over who can interact with a resource. Often but not always, this involves an authority, who does the controlling. The resource can be a given building, group of buildings, or computer-based information system...

  • Access control vestibule
    Access control vestibule
    The Access Control Vestibule is a security screening system for the detection of individuals carrying weapons into any facility without authorization, therefore minimizing the possibility of an armed takeover. The ACV is composed of an aluminum frame, separate entrance and exit doors, a metal...

  • Alarm
    Alarm
    An alarm device or system of alarm devices gives an audible or visual alarm signal about a problem or condition.Alarm devices include:* burglar alarms, designed to warn of burglaries; this is often a silent alarm: the police or guards are warned without indication to the burglar, which increases...

  • Alarm management
    Alarm management
    Alarm management is the application of human factors along with instrumentation engineering and systems thinking to manage the design of an alarm system to increase its usability...

  • Biometrics
    Biometrics
    Biometrics As Jain & Ross point out, "the term biometric authentication is perhaps more appropriate than biometrics since the latter has been historically used in the field of statistics to refer to the analysis of biological data [36]" . consists of methods...

  • Burglar alarm
    Burglar alarm
    Burglar , alarms are systems designed to detect unauthorized entry into a building or area. They consist of an array of sensors, a control panel and alerting system, and interconnections...

  • Burglary
    Burglary
    Burglary is a crime, the essence of which is illicit entry into a building for the purposes of committing an offense. Usually that offense will be theft, but most jurisdictions specify others which fall within the ambit of burglary...

  • Castle
    Castle
    A castle is a type of fortified structure built in Europe and the Middle East during the Middle Ages by European nobility. Scholars debate the scope of the word castle, but usually consider it to be the private fortified residence of a lord or noble...


:Category:Security companies
  • Closed-circuit television
    Closed-circuit television
    Closed-circuit television is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors....

  • Common Access Card
    Common Access Card
    The Common Access Card is a United States Department of Defense smart card issued as standard identification for active-duty military personnel, reserve personnel, civilian employees, other non-DoD government employees, state employees of the National Guard, and eligible contractor personnel.The...

  • Computer security
    Computer security
    Computer security is a branch of computer technology known as information security as applied to computers and networks. The objective of computer security includes protection of information and property from theft, corruption, or natural disaster, while allowing the information and property to...

  • Credential
    Credential
    A credential is an attestation of qualification, competence, or authority issued to an individual by a third party with a relevant or de facto authority or assumed competence to do so....

  • Electronic lock
    Electronic lock
    An electronic lock is a locking device which operates by means of electric current. Electric locks are sometimes stand-alone with an electronic control assembly mounted directly to the lock. More often electric locks are connected to an access control system...

  • Fortification
    Fortification
    Fortifications are military constructions and buildings designed for defence in warfare and military bases. Humans have constructed defensive works for many thousands of years, in a variety of increasingly complex designs...

  • ID Card
  • Keycards
  • Locksmithing
    Locksmithing
    Locksmithing began as the science and art of making and defeating locks. A lock is a mechanism that secures buildings, rooms, cabinets, objects, or other storage facilities. A key is often used to open a lock...

  • Lock picking
    Lock picking
    Lock picking is the art of unlocking a lock by analyzing and manipulating the components of the lock device, without the original key. Although lock picking can be associated with criminal intent, it is an essential skill for a locksmith...

  • Logical security
    Logical security
    Logical Security consists of software safeguards for an organization’s systems, including user identification and password access, authentication, access rights and authority levels. These measures are to ensure that only authorized users are able to perform actions or access information in a...

  • Magnetic stripe card
    Magnetic stripe card
    A magnetic stripe card is a type of card capable of storing data by modifying the magnetism of tiny iron-based magnetic particles on a band of magnetic material on the card...

  • Optical turnstile
    Optical turnstile
    An optical turnstile is a physical security device designed to restrict or control access to a building or secure area. Optical turnstiles are usually a part of an access control system, which also consists of software, card readers, and controllers...

  • Orthotube
    Orthotube
    An orthotube is a capsule-like high security interlocking door allowing entry to a building or office by one authorised person at a time. Orthotubes are typically used by security and intelligence agencies, such as the Australian Security Intelligence Organisation and the United Kingdom Security...

  • Photo identification
    Photo identification
    Photo identification is generally used to define any form of identity document that includes a photograph of the holder.Some countries use a government issued card as a proof of age or citizenship.Types of photo ID cards include:*Passports...

  • Physical Security Professional
    Physical Security Professional
    A Physical Security Professional is a certification process for individuals involved in the physical security of organizations. This certification process is offered by ASIS International...

  • Proximity card
    Proximity card
    Proximity card is a generic name for contactless integrated circuit devices used for security access or payment systems. The standard can refer to the older 125 kHz devices or the newer 13.56 MHz contactless RFID cards, most commonly known as contactless smartcards.Modern proximity cards...

  • Razor wire
    Razor wire
    Barbed tape or razor wire is a mesh of metal strips with sharp edges whose purpose is to prevent passage by humans. The term "razor wire", through long usage, has generally been used to describe barbed tape products...

  • Security
    Security
    Security is the degree of protection against danger, damage, loss, and crime. Security as a form of protection are structures and processes that provide or improve security as a condition. The Institute for Security and Open Methodologies in the OSSTMM 3 defines security as "a form of protection...

  • Security engineering
    Security engineering
    Security engineering is a specialized field of engineering that focuses on the security aspects in the design of systems that need to be able to deal robustly with possible sources of disruption, ranging from natural disasters to malicious acts...

  • Security lighting
    Security lighting
    In the field of physical security, security lighting is often used as a preventative and corrective measure against intrusions or other criminal activity on a physical piece of property. Security lighting may be provided to aid in the detection of intruders, to deter intruders, or in some cases...

  • Security policy
    Security policy
    Security policy is a definition of what it means to be secure for a system, organization or other entity. For an organization, it addresses the constraints on behavior of its members as well as constraints imposed on adversaries by mechanisms such as doors, locks, keys and walls...

  • Smart card
    Smart card
    A smart card, chip card, or integrated circuit card , is any pocket-sized card with embedded integrated circuits. A smart card or microprocessor cards contain volatile memory and microprocessor components. The card is made of plastic, generally polyvinyl chloride, but sometimes acrylonitrile...

  • Surveillance
    Surveillance
    Surveillance is the monitoring of the behavior, activities, or other changing information, usually of people. It is sometimes done in a surreptitious manner...

  • Swipe card


External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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