A bolometer is a device for measuring radiant heat by means of a material having a temperature-dependent electrical resistance. It was invented in 1878 by the American astronomer Samuel Pierpont Langley.
A Faraday cage or Faraday shield is an enclosure used to block some electromagnetic fields. A Faraday shield may be formed by a continuous covering of conductive material, or in the case of a Faraday cage, by a mesh of such materials. Faraday cages are named after scientist Michael Faraday, who first constructed one in 1836.
Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter. When triggered by an electromagnetic interrogation pulse from a nearby RFID reader device, the tag transmits digital data, usually an identifying inventory number, back to the reader. This number can be used to track inventory goods.
Shoplifting is the theft of goods from a retail establishment during business hours. The terms shoplifting and shoplifter are not usually defined in law, and generally fall under larceny. In the retail industry, the word shrinkage is used to refer to merchandise often lost by shoplifting. The term five-finger discount is an euphemism for shoplifting, humorously referencing stolen items taken "at no cost" with the five fingers.
A preamplifier, also known as a preamp, is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker. Without this, the final signal would be noisy or distorted. They are typically used to amplify signals from analog sensors such as microphones and pickups. Because of this, the preamplifier is often placed close to the sensor to reduce the effects of noise and interference.
Retail loss prevention is a set of practices employed by retail companies to preserve profit. Loss prevention is mainly found within the retail sector but also can be found within other business environments.
Electronic article surveillance (EAS) is a type of system used to prevent shoplifting from retail stores, pilferage of books from libraries, or unwanted removal of properties from office buildings. EAS systems typically consist of two components: EAS antennas and EAS tags or labels. EAS tags are attached to merchandise; these tags can only be removed or deactivated by employees when the item is properly purchased or checked out. If merchandise bearing an active tag passes by an antenna installed at an entrance/exit, an alarm sounds alerting staff that merchandise is leaving the store unauthorized. Some stores also have antennas at entrances to restrooms to deter shoppers from taking unpaid-for merchandise into the restroom where they could remove the tags.
Bagger, packer, sacker or bag boy (US) is an unofficial title given to a courtesy clerk at a grocery store.
A store detective is a member of loss prevention whose main role is to prevent and detect theft and reduce shrink in retail outlets. They do this by patrolling the store in plain clothes looking to identify members of the public who are stealing from the store. More common terms today with major retailers are loss prevention agent, detective or investigator and asset protection officer. Special officer, once common, is now rarely used, as it is typically denotes some form of law enforcement authority, and some jurisdictions limit its use.
Bag tags, also known as baggage tags, baggage checks or luggage tickets, have traditionally been used by bus, train, and airline carriers to route checked luggage to its final destination. The passenger stub is typically handed to the passenger or attached to the ticket envelope:
- to aid the passenger in identifying their bag among similar bags at the destination baggage carousel;
- as proof—still requested at a few airports—that the passenger is not removing someone else's bag from the baggage reclaim hall; and
- as a means for the passenger and carrier to identify and trace a specific bag that has gone astray and was not delivered at the destination. The carriers' liability is restricted to published tariffs and international agreements.
Vacuum packing is a method of packaging that removes air from the package prior to sealing. This method involves placing items in a plastic film package, removing air from inside and sealing the package. Shrink film is sometimes used to have a tight fit to the contents. The intent of vacuum packing is usually to remove oxygen from the container to extend the shelf life of foods and, with flexible package forms, to reduce the volume of the contents and package.
Airport check-in is the process whereby an airline approves airplane passengers to board an airplane for a flight. Airlines typically use service counters found at airports for this process, and the check-in is normally handled by an airline itself or a handling agent working on behalf of an airline. Passengers usually hand over any baggage that they do not wish or are not allowed to carry in the aircraft's cabin and receive a boarding pass before they can proceed to board their aircraft.
An antistatic bag is a bag used for storing electronic components, which are prone to damage caused by electrostatic discharge (ESD).
Ink tags are a form of retail loss prevention that is commonly used in clothing stores. These tags contain glass vials filled with permanent ink and have a thick plastic cover. The tags are attached to the items they protect with a magnetic lock which requires a special tool to remove. When forcibly removed from the item the vials of ink will shatter, releasing the ink and irreparably damaging the fabric. The tags typically have warning labels to discourage tampering. Ink tags fall into the loss prevention category called benefit denial. As the name suggests, an ink tag discourages theft by denying the shoplifter any benefit for their efforts. Ink tags are most effective if used together with another anti-shoplifting system.
A bag is a common tool in the form of a non-rigid container, typically made of cloth, leather, bamboo, paper, or plastic. The use of bags predates recorded history, with the earliest bags being lengths of animal skin, cotton, or woven plant fibers, folded up at the edges and secured in that shape with strings of the same material. Bags can be used to carry items such as personal belongings, groceries, and other objects. They comes in various shapes and sizes, often equipped with handles or straps for easier carrying.
Theft from libraries of books, historical documents, maps and other materials from libraries is considered a significant problem. One study commissioned in the UK estimated the average loss rate of libraries to theft at 5.3%.
A shock detector, shock indicator, or impact monitor is a device which indicates whether a physical shock or impact has occurred. These usually have a binary output (go/no-go) and are sometimes called shock overload devices. Shock detectors can be used on shipments of fragile valuable items to indicate whether a potentially damaging drop or impact may have occurred. They are also used in sports helmets to help estimate if a dangerous impact may have occurred.
A security bag is a heavy duty bag used to contain high-value products, documents or legally sensitive items. Envelopes with security features are called security envelopes as well as security bags. Cash for deposit in a bank is often placed in a special deposit bag with security features. When they are used to contain items related to a crime, special evidence bags are used. Authentication of signatures and chain of custody are often required.
Shirley Sally Pitts, later Shirley Sally Hawkins, was an English fraudster and thief known as the "queen of shoplifters". Born into poverty and crime, she began to steal as a child to feed her siblings. She was educated in shoplifting by the Forty Elephants, also known as the Forty Thieves, and later diversified into other non-violent crime such as fraud.
Evidence packaging involves the specialized packaging methods and materials used for physical evidence. Items need to be collected at a crime scene or a fire scene, forwarded to a laboratory for forensic analysis, put in secure storage, and used in a courtroom, all while maintaining the chain of custody. Items might include DNA, drugs, hair samples, body parts, blood samples, sperm, knives, vomit, firearms, bullets, fire accelerants, computers, checkbooks, etc.
