Glossary
705 termsWelcome to your glossary of over 700 terms and definitions related to sectors with security, authentication, and trust at their core.
While the emphasis of the glossary is on terms relating to security technologies and systems, it also extends to other terms commonly encountered in these different sectors. Is there a term missing that you need a definition for? Don't hesitate to let us know at [email protected].
Cold foiling
A foil application process that does not require heat.
Colour shift
An optically variable effect whereby a material – usually a thin film or ink – changes from one colour to another, or from one colour to clear, when the viewing angle is altered.
Competent authority
A government agency designated to implement a system, such as a tax stamp and track and trace solution.
Complementary metal oxide semiconductor
The semiconductor technology used in most of today’s integrated circuits.
Continuous inkjet
A digital printing technique in which a continuous fine stream of electricity charged ink is formed and diverted onto the substrate as needed to form the printed image. Unused ink is collected and reused.
Converter
A packaging supplier who converts raw materials (paper, carton, board, aluminium foil etc.) into finished packaging components. The term is often used as a loose synonym for a packaging printer and the two functions are often combined into the same supplier.
Counterfeit
The illegal production and sale of goods (including packaging) bearing a trademark that is identical to a validly registered trademark or that cannot be distinguished from such a trademark. Also refers to the reproduction of a banknote or security document that looks authentic but has been manufactured fraudulently with the intent to deceive the public.
Covert laser readable image
An image, symbol or text that is invisible to the unaided eye as well as under a microscope, but that can be visualised by a laser beam. It is formed when recording a hologram image using e-beam lithography, as a 1 micron-sized area on the hologram surface.
Covert security feature
akaCovert (or hidden) features require a detector or instrument in their detection, which are usually only available to officials such as enforcement authorities and central banks.The general public and supply chain operators generally do not know about these features.
Cryptography
A method of protecting information and communications through the use of codes.
Custom barcode
The use of a non-standard system of bars and spaces to encode data.
Cybercrime
Crime committed to steal or defraud people of electronic money, or crypto-assets, online.
Cybersecurity
Protecting data and communications against attacks from (amongst other things) malware, denial of service and phishing attacks.
Dandy roll
A mesh-covered hollow roll placed on top of a Fourdrinier papermaking machine. The dandy roll breaks up fibre clumps to improve sheet formation and can also create watermarks in paper, by pressing onto newly formed fibres. If the roll has been produced with raised elements, those elements press into the fibres leaving an impression which, when the paper is formed, allows more light to be seen relative to the thicker background paper. This is a form of watermark, albeit only 2D.
Data carrier
In the context of track and trace, usually refers to a barcode (primarily 2D), or a microchip carrying track and trace data in a machine-readable format.
Datamatrix code
A 2D code consisting of black and white cells or dots arranged in a square or rectangular pattern, also known as a matrix. The information to be encoded can be text or numeric data. Usual data size is from a few bytes up to 1556 bytes.
Daylight fluorescent ink
Fluorescent ink that is activated by visible light, instead of the more customary UV radiation.
Debossing
Creating an image or text (such as expiry and batch data) which is sunk below the level of the surrounding substrate using a die plate or punch.
Decal
An image or print that can be moved from one surface onto another, usually with the aid of heat or water.
Decentralised ledger system
A ledger system, recording transactions and holdings, which is held in multiple places and simultaneously updated. See Distributed ledger technology for a description of the technical infrastructure on which distributed ledger systems can be based.
Decoding
The translation of a code into a format that is more generally understood.
Decryption
The process of converting encrypted data back to its original form, often with the use of a covert key or password.
Demetallisation
A two-stage process in which metal, usually aluminium, is deposited onto a hologram or OVD and then selectively removed in order to create a design. The removal is achieved by either first printing a protective resin onto the metallic layer then dissolving away the unprotected metal, or ablating the metal with a laser beam. Used for security threads and foils in banknotes.
Die
A hardened metal tool, the face of which carries an engraved design for cutting or shaping low-strength materials, such as fibre, foil, paper, plastics, pressure-sensitive labels and sheet metal. Dies are used to create coins from metal blanks.
Diffraction
The phenomenon whereby lightwaves are bent as a result of passing through small apertures or around small objects or lines whose dimensions are comparable to the light wavelength. Of particular interest are gratings (a pattern of such lines) because these have the ability to bend light of different wavelengths by different amounts. Hence, they produce a prismatic effect of splitting white light into the colours of the rainbow – a feature typical to most DOVIDs.
Diffractive optically variable image device
(DOVID)A collective term for images that display complex visual effects that change according to the viewing angle, based on the phenomenon of diffraction. These effects are varied and typically three-dimensional, kinetic (exhibiting movement), multichannel (where one image, or part of an image, changes into another) or animated (ie. stereograms). DOVIDs include holograms, Kinegrams and other diffractive features.
Digifeiting
The reproduction (as in counterfeiting) of documents and packaging using digital reprographic technology.
Digital
The storage, transmission, manipulation and reproduction of data, images, sounds, etc., by a process that uses groups of electronic bits represented as 1 or 0.
Digital printing
Any printing technology capable of producing printed materials directly from a computer file. Digital printing does not require an intermediary medium such as film, nor an intermediary machine such as a platemaker. Non-impact printing such as laser, inkjet and dye sublimation all fall into this category.
Digital Product Passport
(DPP)The European Commission defines a ‘product passport’ as a product-specific dataset that can be electronically accessed via a data carrier to facilitate the electronic registration, processing, and sharing of product-related information among supply chain entities, authorities, and consumers.
Digital signature
A type of electronic signature that protects a document or authenticates a device by encryption with digital codes that are difficult to duplicate or decrypt.
Digital tax stamp
Commonly refers to a tax stamp which carries a digitally generated and printed unique identifier.
Direct marking
A method of applying codes or information directly onto a product, without the use of a tax stamp or other label.
Diversion
The unauthorised transfer of goods from one jurisdiction to another in order to bypass taxation or regulatory requirements.
DNA taggant
Organic molecular particles based on DNA carbon compounds, either naturally occurring or synthetic. Typically used to tag documents or products for subsequent testing to prove authenticity.
Dot matrix printer
An impact printer that uses a fixed number of pins or wires, typically arranged in one or several vertical columns. The pins strike an ink-coated ribbon and force contact between the ribbon and the paper, so that each pin makes a small dot on the paper. The combination of these dots forms a dot matrix image allowing for various types of characters and digits to be reproduced. While inkjet and laser printers technically exhibit dot matrix printing, they are not considered to be ‘dot matrix printers’. Dot matrix printers are often used for counterfeiting the serial numbers on banknotes.
Dots per inch
(DPI)Used to measure the resolution of an image both on screen and in print. DPI measures how many dots fit into a linear inch, therefore the higher the DPI, the more detail can be shown in an image.
Down-conversion
An ink or substance which absorbs incident light at a specific wavelength and emits it at a lower energy (longer wavelength). Usually these substrates absorb ultraviolet light and emit visible light. See also Upconversion.
Drop-on-demand inkjet
A digital printing technology used on production lines often to print variable data such as lot numbers and expiry dates. In contrast to continuous inkjet, DOD printers only create ink drops as needed to form the image. They tend to be faster than continuous inkjet printers.
ECC 200
The newest version of the datamatrix code, the most commonly used GS1-compliant 2D matrix code in pharmaceuticals.
Economic operator
Under the EU Tobacco Products Directive this refers to any natural or legal person involved in the trade of tobacco products, including for export, from the manufacturer to the last economic operator before the first retail outlet.
Electromagnetic spectrum
The complete group of waves that range in frequency from radio waves to gamma rays, but all travel at the speed of light.
Electron beam lithography
(E-beam)The technique of scanning a focused beam of electrons to draw custom shapes on a surface covered with an electron-sensitive film called a resist. The whole origination process is undertaken in a vacuum chamber where the e-beam writes onto the resist plate. This is sometimes referred to as a direct write process. It is used to create holographic images.
Electronic identification and trust services regulation
(eIDAS)An EU regulation on electronic identification and trust services for electronic transactions in the European Single Market, established under EU Regulation 910/2014 of 23 July 2014.
Electronic Product Code
A data standard for the unique identification of any individual item around the world. Whereas a Global Trade Item Number (GTIN) identifies a class of trade item, such as ‘two-litre Acme bottled water’, an EPC can only identify one particular two-litre bottle of Acme water. Only the combination of a GTIN plus a serial number corresponds to an EPC.
Electronic Product Code Information Service
(EPCIS)A global GS1 product code standard for creating and sharing visibility event data, both within and across enterprises, to give users a shared view of physical or digital objects within a relevant business context.
Electronic signature
An electronic authentication technique that is a legal substitute for a handwritten signature.
Embedded feature
Security features embedded in the paper during the production process or inserted between laminated layers. These include threads, planchettes, microtaggants, microcapsules and other devices, which cannot be removed or added retroactively without destroying the paper.
Embossing
The transfer of a raised pattern from a hard plate to a softer material. This mechanical transfer (which can be made through a seal, stamp or die) is usually facilitated by means of heat and always with pressure.
Encoding
The conversion of information or data into a code.