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Locationized Gun
A location-based firearm is a gun that uses electronic technologies such as geofencing to restrict its firing to authorized locations, thereby allowing its use for protecting life and property in those locations while preventing its use in other locations for crimes such as robberies, drive-by shootings, assassinations, and massacres. History The first locationized gun was invented by John Martin in 1984. Although locationized guns could prevent much crime and accompanying deaths and injuries, they have not been commercially developed. An important reason for that is because legislated restrictions would be required for conventional guns, and those restrictions would be difficult to pass in some markets. Operating principles, advantages, and technologies The main advantage of locationized guns is that they can satisfy the right to possess arms for defense of homes and businesses while being useless for many crimes that can be committed away from those homes and businesses. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geofencing
A geofence is a virtual perimeter for a real-world geographic area. A geofence could be dynamically generated (as in a radius around a point location) or match a predefined set of boundaries (such as school zones or neighborhood boundaries). The use of a geofence is called geofencing, and one example of use involves a location-aware device of a location-based service (LBS) user entering or exiting a geofence. Geofencing approach is based on the observation that users move from one place to another and then stay at that place for a while. This method combines awareness of the user's current location with awareness of the user's proximity to locations that may be of interest. This activity could trigger an alert to the device's user as well as messaging to the geofence operator. This info, which could contain the location of the device, could be sent to a mobile telephone or an email account. History Geofencing was invented in the early 1990’s and patented in 1995 by American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Police Raid
A police raid is an unexpected visit by police or other law-enforcement officers with the aim of using the element of surprise in order to seize evidence or arrest suspects believed to be likely to hide evidence, resist arrest, be politically sensitive, or simply be elsewhere during the day. Overview and methods The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) defines a raid as "a sudden appearance by officers for the purpose of arresting suspected law violators and seizing contraband and the means and instruments used in the commission of a crime." Types Pre-dawn raid A pre-dawn raid is a SWAT tactic that involves police, right before sunrise, raiding a location in order to gain an upper hand in combat, retrieve an important document or file, or capture a specific person. There may be a hostage of high political influence or a dangerous person that poses a threat to the police. Pre-dawn raids usually occur during the early morning (usually between one a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sentry Gun
A sentry gun is a weapon that is automatically aimed and fired at targets that are detected by sensors. The earliest functioning military sentry guns were the close-in weapon systems point-defense weapons, such as the Phalanx CIWS, used for detecting and destroying short range incoming missiles and enemy aircraft, first used exclusively on naval assets, and now also as land-based defenses. Military use Samsung SGR-A1 The Samsung SGR-A1 is a South Korean military robot sentry designed to replace human counterparts in the demilitarized zone at the South and North Korean border. It is a stationary system made by Samsung defense subsidiary Samsung Techwin. Sentry Tech In 2007, the Israeli military deployed the Sentry Tech system, dubbed as the Roeh-Yoreh (Sees-Fires) by the IDF along the Gaza border fence with pillboxes placed at intervals of some hundreds of meters. The 4-million USD (3.35 million Euro) system was completed in late spring of 2008. The weapon system mounts a .50 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smart Gun
A smart gun, also called a smart-gun, or smartgun, is a firearm that can detect its authorized user(s) or something that is normally only possessed by its authorized user(s). The term is also used in science fiction to refer to various types of semi-automatic firearms. Smart guns have one or more systems that allow them to fire only when activated by an authorized user. Those systems typically employ RFID chips or other proximity tokens, fingerprint recognition, magnetic rings, or mechanical locks. They can thereby prevent accidental shootings, gun thefts, and criminal usage by persons not authorized to use the guns. Related to smart guns are other smart firearms safety devices such as biometric or RFID activated accessories and safes. Commercial availability No smart gun has ever been sold on the commercial market in the United States. The Armatix iP1, a .22 caliber handgun with an active RFID watch used to unlock it, is the most mature smart gun developed. It was briefly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cell Phone
A mobile phone, cellular phone, cell phone, cellphone, handphone, hand phone or pocket phone, sometimes shortened to simply mobile, cell, or just phone, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area. The radio frequency link establishes a connection to the switching systems of a mobile phone operator, which provides access to the public switched telephone network (PSTN). Modern mobile telephone services use a cellular network architecture and, therefore, mobile telephones are called ''cellular telephones'' or ''cell phones'' in North America. In addition to telephony, digital mobile phones ( 2G) support a variety of other services, such as text messaging, multimedia messagIng, email, Internet access, short-range wireless communications (infrared, Bluetooth), business applications, video games and digital photography. Mobile phones offering only those capabilities are known as fea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triangulation
In trigonometry and geometry, triangulation is the process of determining the location of a point by forming triangles to the point from known points. Applications In surveying Specifically in surveying, triangulation involves only angle measurements at known points, rather than measuring distances to the point directly as in trilateration; the use of both angles and distance measurements is referred to as triangulateration. In computer vision Computer stereo vision and optical 3D measuring systems use this principle to determine the spatial dimensions and the geometry of an item. Basically, the configuration consists of two sensors observing the item. One of the sensors is typically a digital camera device, and the other one can also be a camera or a light projector. The projection centers of the sensors and the considered point on the object's surface define a (spatial) triangle. Within this triangle, the distance between the sensors is the base ''b'' and must be known. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless Communication
Wireless communication (or just wireless, when the context allows) is the transfer of information between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most common wireless technologies use radio waves. With radio waves, intended distances can be short, such as a few meters for Bluetooth or as far as millions of kilometers for deep-space radio communications. It encompasses various types of fixed, mobile, and portable applications, including two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking. Other examples of applications of radio ''wireless technology'' include GPS units, garage door openers, wireless computer mouse, keyboards and headsets, headphones, radio receivers, satellite television, broadcast television and cordless telephones. Somewhat less common methods of achieving wireless communications involve other electromagnetic phenomena, such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Restraining Order
A restraining order or protective order, is an order used by a court to protect a person in a situation involving alleged domestic violence, child abuse, assault, harassment, stalking, or sexual assault. Restraining and personal protection order laws vary from one jurisdiction to another but all establish who can file for an order, what protection or relief a person can get from such an order, and how the order will be enforced. The court will order the adverse party to refrain from certain actions or require compliance with certain provisions. Failure to comply is a violation of the order which can result in the arrest and prosecution of the offender. Violations in some jurisdictions may also constitute criminal or civil contempt of court. Restraining order provisions All protective order statutes permit the court to instruct an alleged abuser to stay a certain distance away from someone, such as their home, workplace or school ("stay away" provisions), and not to contact the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suicide
Suicide is the act of intentionally causing one's own death. Mental disorders (including depression, bipolar disorder, schizophrenia, personality disorders, anxiety disorders), physical disorders (such as chronic fatigue syndrome), and substance abuse (including alcoholism and the use of and withdrawal from benzodiazepines) are risk factors. Some suicides are impulsive acts due to stress (such as from financial or academic difficulties), relationship problems (such as breakups or divorces), or harassment and bullying. Those who have previously attempted suicide are at a higher risk for future attempts. Effective suicide prevention efforts include limiting access to methods of suicide such as firearms, drugs, and poisons; treating mental disorders and substance abuse; careful media reporting about suicide; and improving economic conditions. Although crisis hotlines are common resources, their effectiveness has not been well studied. The most commonly adopted metho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shootout
A shootout, also called a firefight or gunfight, is a fight between armed combatants using firearms. The term can be used to describe any such fight, though it is typically used to describe those that do not involve military forces or only involve firearms (thus excluding crew-served weapons, combat vehicles, armed aircraft, or explosives). Shootouts often pit law enforcement against criminals, though they can also involve groups outside of law enforcement, such as rivalling gangs, militias, or individuals. Military combat situations are rarely called "shootouts", and are almost always considered battles, engagements, or skirmishes. Shootouts are often depicted in action films, Westerns, and video games. Notable shootouts in the United States and territories Gunfight on Vine Street May 30, 1856. The Gunfight involved Judge Bird, Dr. Troy, Dr. Hunter, Colonel John R. Bell and his two sons (Charles and John Bell) and took place in Cahaba, Alabama, the former State Capitol of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theft
Theft is the act of taking another person's property or services without that person's permission or consent with the intent to deprive the rightful owner of it. The word ''theft'' is also used as a synonym or informal shorthand term for some crimes against property, such as larceny, robbery, embezzlement, extortion, blackmail, or receiving stolen property. In some jurisdictions, ''theft'' is considered to be synonymous with ''larceny'', while in others, ''theft'' is defined more narrowly. Someone who carries out an act of theft may be described as a "thief" ( : thieves). ''Theft'' is the name of a statutory offence in California, Canada, England and Wales, Hong Kong, Northern Ireland, the Republic of Ireland, and the Australian states of South Australia Theft (and receiving). and Victoria. Theft. Elements The '' actus reus'' of theft is usually defined as an unauthorized taking, keeping, or using of another's property which must be accompanied by a '' mens rea'' of dish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crime
In ordinary language, a crime is an unlawful act punishable by a State (polity), state or other authority. The term ''crime'' does not, in modern criminal law, have any simple and universally accepted definition,Farmer, Lindsay: "Crime, definitions of", in Cane and Conoghan (editors), ''The New Oxford Companion to Law'', Oxford University Press, 2008 (), p. 263Google Books). though statutory definitions have been provided for certain purposes. The most popular view is that crime is a Category of being, category created by law; in other words, something is a crime if declared as such by the relevant and applicable law. One proposed definition is that a crime or offence (or criminal offence) is an act harmful not only to some individual but also to a community, society, or the state ("a public wrong"). Such acts are forbidden and punishable by law. The notion that acts such as murder, rape, and theft are to be prohibited exists worldwide. What precisely is a criminal offence is de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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