Provide /Control Access To Publication Innovation
COURTESY :- vrindawan.in
Wikipedia
In the fields of physical security and information security, access control (AC) is the selective restriction of access to a place or other resource, while access management describes the process. The act of accessing may mean consuming, entering, or using. Permission to access a resource is called authorization.
Locks and login credentials are two analogous mechanisms of access control.
Geographical access control may be enforced by personnel (e.g. border guard, bouncer, ticket checker), or with a device such as a turnstile. There may be fences to avoid circumventing this access control. An alternative of access control in the strict sense (physically controlling access itself) is a system of checking authorized presence, see e.g. Ticket controller (transportation). A variant is exit control, e.g. of a shop (checkout) or a country.
The term access control refers to the practice of restricting entrance to a property, a building, or a room to authorized persons. Physical access control can be achieved by a human (a guard, bouncer, or receptionist), through mechanical means such as locks and keys, or through technological means such as access control systems like the mantrap. Within these environments, physical key management may also be employed as a means of further managing and monitoring access to mechanically keyed areas or access to certain small assets.
Physical access control is a matter of who, where, and when. An access control system determines who is allowed to enter or exit, where they are allowed to exit or enter, and when they are allowed to enter or exit. Historically, this was partially accomplished through keys and locks. When a door is locked, only someone with a key can enter through the door, depending on how the lock is configured. Mechanical locks and keys do not allow restriction of the key holder to specific times or dates. Mechanical locks and keys do not provide records of the key used on any specific door, and the keys can be easily copied or transferred to an unauthorized person. When a mechanical key is lost or the key holder is no longer authorized to use the protected area, the locks must be re-keyed.
Electronic access control (EAC) uses computers to solve the limitations of mechanical locks and keys. A wide range of credentials can be used to replace mechanical keys. The electronic access control system grants access based on the credential presented. When access is granted, the door is unlocked for a predetermined time and the transaction is recorded. When access is refused, the door remains locked and the attempted access is recorded. The system will also monitor the door and alarm if the door is forced open or held open too long after being unlocked.
When a credential is presented to a reader, the reader sends the credential’s information, usually a number, to a control panel, a highly reliable processor. The control panel compares the credential’s number to an access control list, grants or denies the presented request, and sends a transaction log to a database. When access is denied based on the access control list, the door remains locked. If there is a match between the credential and the access control list, the control panel operates a relay that in turn unlocks the door. The control panel also ignores a door open signal to prevent an alarm. Often the reader provides feedback, such as a flashing red LED for an access denied and a flashing green LED for an access granted.
The above description illustrates a single factor transaction. Credentials can be passed around, thus subverting the access control list. For example, Alice has access rights to the server room, but Bob does not. Alice either gives Bob her credential, or Bob takes it; he now has access to the server room. To prevent this, two-factor authentication can be used. In a two factor transaction, the presented credential and a second factor are needed for access to be granted; another factor can be a PIN, a second credential, operator intervention, or a bio metric input.
There are three types (factors) of authenticating information:
- something the user knows, e.g. a password, pass-phrase or PIN
- something the user has, such as smart card or a key fob
- something the user is, such as the users fingerprint, verified by biometric measurement
Passwords are a common means of verifying a user’s identity before access is given to information systems. In addition, a fourth factor of authentication is now recognized: someone you know, whereby another person who knows you can provide a human element of authentication in situations where systems have been set up to allow for such scenarios. For example, a user may have their password, but have forgotten their smart card. In such a scenario, if the user is known to designated cohorts, the cohorts may provide their smart card and password, in combination with the extant factor of the user in question, and thus provide two factors for the user with the missing credential, giving three factors overall to allow access.
A credential is a physical/tangible object, a piece of knowledge, or a facet of a person’s physical being that enables an individual access to a given physical facility or computer-based information system. Typically, credentials can be something a person knows (such as a number or PIN), something they have (such as an access badge), something they are (such as a biometric feature), something they do (measurable behavioural patterns), or some combination of these items. This is known as multi-factor authentication. The typical credential is an access card or key-fob, and newer software can also turn users’ smartphones into access devices.
There are many card technologies including magnetic stripe, bar code, Wiegand, 125 kHz proximity, 26-bit card-swipe, contact smart cards, and contactless smart cards. Also available are key-fobs, which are more compact than ID cards, and attach to a key ring. Biometric technologies include fingerprint, facial recognition, iris recognition, retinal scan, voice, and hand geometry. The built-in biometric technologies found on newer smartphones can also be used as credentials in conjunction with access software running on mobile devices. In addition to older more traditional card access technologies, newer technologies such as Near field communication (NFC), Bluetooth low energy or Ultra-wideband (UWB) can also communicate user credentials to readers for system or building access.
Components of an access control system include:
- An access control panel (also known as a controller)
- An access-controlled entry, such as a door, turnstile, parking gate, elevator, or other physical barrier
- A reader installed near the entry. (In cases where the exit is also controlled, a second reader is used on the opposite side of the entry.)
- Locking hardware, such as electric door strikes and electromagnetic locks
- A magnetic door switch for monitoring door position
- Request-to-exit (RTE) devices for allowing egress. When a RTE button is pushed, or the motion detector detects motion at the door, the door alarm is temporarily ignored while the door is opened. Exiting a door without having to electrically unlock the door is called mechanical free egress. This is an important safety feature. In cases where the lock must be electrically unlocked on exit, the request-to-exit device also unlocks the door.
Typical access control door wiring
Access control door wiring when using intelligent readers
Access control decisions are made by comparing the credentials to an access control list. This look-up can be done by a host or server, by an access control panel, or by a reader. The development of access control systems has observed a steady push of the look-up out from a central host to the edge of the system, or the reader. The predominant topology circa 2009 is hub and spoke with a control panel as the hub, and the readers as the spokes. The look-up and control functions are by the control panel. The spokes communicate through a serial connection; usually RS-485. Some manufactures are pushing the decision making to the edge by placing a controller at the door. The controllers are IP enabled, and connect to a host and database using standard networks
Access control readers may be classified by the functions they are able to perform:
- Basic (non-intelligent) readers: simply read card number or PIN, and forward it to a control panel. In case of biometric identification, such readers output the ID number of a user. Typically, Wiegand protocol is used for transmitting data to the control panel, but other options such as RS-232, RS-485 and Clock/Data are not uncommon. This is the most popular type of access control readers. Examples of such readers are RF Tiny by RFLOGICS, ProxPoint by HID, and P300 by Farpointe Data.
- Semi-intelligent readers: have all inputs and outputs necessary to control door hardware (lock, door contact, exit button), but do not make any access decisions. When a user presents a card or enters a PIN, the reader sends information to the main controller, and waits for its response. If the connection to the main controller is interrupted, such readers stop working, or function in a degraded mode. Usually semi-intelligent readers are connected to a control panel via an RS-485 bus. Examples of such readers are InfoProx Lite IPL200 by CEM Systems, and AP-510 by Apollo.
- Intelligent readers: have all inputs and outputs necessary to control door hardware; they also have memory and processing power necessary to make access decisions independently. Like semi-intelligent readers, they are connected to a control panel via an RS-485 bus. The control panel sends configuration updates, and retrieves events from the readers. Examples of such readers could be InfoProx IPO200 by CEM Systems, and AP-500 by Apollo. There is also a new generation of intelligent readers referred to as “IP readers”. Systems with IP readers usually do not have traditional control panels, and readers communicate directly to a PC that acts as a host.
Some readers may have additional features such as an LCD and function buttons for data collection purposes (i.e. clock-in/clock-out events for attendance reports), camera/speaker/microphone for intercom, and smart card read/write support.
Publishing is the activity of making information, literature, music, software and other content available to the public for sale or for free. Traditionally, the term refers to the creation and distribution of printed works, such as books, newspapers, and magazines. With the advent of digital information systems, the scope has expanded to include electronic publishing such as ebooks, academic journals, micropublishing, websites, blogs, video game publishing, and the like.
Publishing may produce private, club, commons or public goods and may be conducted as a commercial, public, social or community activity. The commercial publishing industry ranges from large multinational conglomerates such as Bertelsmann, RELX, Pearson and Thomson Reuters to thousands of small independents. It has various divisions such as trade/retail publishing of fiction and non-fiction, educational publishing (k-12) and academic and scientific publishing. Publishing is also undertaken by governments, civil society and private companies for administrative or compliance requirements, business, research, advocacy or public interest objectives. This can include annual reports, research reports, market research, policy briefings and technical reports. Self-publishing has become very common.
“Publisher” can refer to a publishing company or organization, or to an individual who leads a publishing company, imprint, periodical or newspaper.
Publishing became possible with the invention of writing, and became more practical upon the introduction of printing. Prior to printing, distributed works were copied manually, by scribes. Due to printing, publishing progressed hand-in-hand with the development of books.
The Chinese inventor Bi Sheng made movable type of earthenware circa 1045, but there are no known surviving examples of his work. The Korean civil servant Choe Yun-ui, who lived during the Goryeo Dynasty, invented the first metal moveable type in 1234–1250 AD
Around 1450, in what is commonly regarded as an independent invention, Johannes Gutenberg invented movable type in Europe, along with innovations in casting the type based on a matrix and hand mould. This invention gradually made books less expensive to produce and more widely available.
Early printed books, single sheets and images which were created before 1501 in Europe are known as incunables or incunabula. “A man born in 1453, the year of the fall of Constantinople, could look back from his fiftieth year on a lifetime in which about eight million books had been printed, more perhaps than all the scribes of Europe had produced since Constantine founded his city in A.D. 330.”
Eventually, printing enabled other forms of publishing besides books. The history of modern newspaper publishing started in Germany in 1609, with publishing of magazines following in 1663.
Missionaries brought printing presses to sub-Saharan Africa in the mid-18th century.
Historically, publishing has been handled by publishers, although some authors self-published. The establishment of the World Wide Web in 1989 soon propelled the website into a dominant medium of publishing. Wikis and Blogs soon developed, followed by online books, online newspapers, and online magazines.
Since its start, the World Wide Web has been facilitating the technological convergence of commercial and self-published content, as well as the convergence of publishing and producing into online production through the development of multimedia content.
A U.S.-based study in 2016 that surveyed 34 publishers found that the publishing industry in the US in general is overwhelmingly represented by straight, able bodied, white females. Salon described the situation as “lack of diversity behind the scenes in book world”. A survey in 2020 by the same group found there has been no statistical significant change in the lack of diversity since the 2016 survey four years earlier. Lack of diversity in the American publishing industry has been an issue for years. Within the industry, there was the least amount of diversity in higher level editorial positions.
There are four major types of publishers in book publishing:
- Commercial publishers are more rigid and selective as to which books, they publish. If accepted, authors pay no costs to publish in exchange for selling rights to their work. They receive in-house editing, design, printing, marketing and distribution services, and are paid royalties on sales.
- Self-publishers: Authors use self-publishing houses to publish their books and retain full rights to their works. Self-publishing houses are more open than traditional publishing houses, allowing emerging and established authors to publish their work. A number of modern or self-publishing houses offer enhanced services (e.g. editing, design) and authors may choose which one to use. Authors shoulder pre-publishing expenses and in return retain all the rights to their works, keep total control, and are paid royalties on sales.
- Vanity presses portray themselves as traditional publishers but are, in fact, just a self-publishing service. Unlike genuine self-publishing services, the author is often obliged to use some or all of their additional services, and the press will often take rights to the work as part of their contract.
- Hybrid publishers operate with a different revenue model than traditional publishing, while keeping the rest of the practices of publishing the same. There have been attempts to bridge this gap using hybrid models. No one model has been fully proven at this stage.
Derided in the 1911 Encyclopædia Britannica as “a purely commercial affair” that cared more about profits than about literary quality, publishing is like any business, with a need for the expenses not to exceed the income. Publishing is now a major industry with the largest companies Reed Elsevier and Pearson PLC having global publishing operations.
Some businesses maximize their profit margins through vertical integration; book publishing is not one of them. Although newspaper and magazine companies still often own printing presses and binderies, book publishers rarely do. Similarly, the trade usually sells the finished products through a distributor who stores and distributes the publisher’s wares for a percentage fee or sells on a sale or return basis.
The advent of the Internet has provided the electronic way of book distribution without the need of physical printing, physical delivery and storage of books.
Within the electronic book path, the publishing house’s role remains almost identical. The process of preparing a book for e-book publication is exactly the same as print publication, with only minor variations in the process to account for the different mediums of publishing. While some costs, such as the discount given to retailers (normally around 45%) are eliminated, additional costs connected to ebooks apply (especially in the conversion process), raising the production costs to a similar level.
Print on demand is rapidly becoming an established alternative to traditional publishing.
Book clubs are almost entirely direct-to-retail, and niche publishers pursue a mixed strategy to sell through all available outlets — their output is insignificant to the major booksellers, so lost revenue poses no threat to the traditional symbiotic relationships between the four activities of printing, publishing, distribution, and retail.
Newspapers are regularly scheduled publications that present recent news, typically on a type of inexpensive paper called newsprint. Most newspapers are primarily sold to subscribers, through retail newsstands or are distributed as advertising-supported free newspapers. About one-third of publishers in the United States are newspaper publishers.
Nominally, periodical publishing involves publications that appear in a new edition on a regular schedule. Newspapers and magazines are both periodicals, but within the industry, the periodical publishing is frequently considered a separate branch that includes magazines and even academic journals, but not newspapers. About one-third of publishers in the United States publish periodicals (not including newspapers). The library and information science communities often refer to periodicals as serials.
The global book publishing industry accounts for over $100 billion of annual revenue, or about 15% of the total media industry.
For-profit publishers of books that serve the general public are often referred to as “trade publishers.” Book publishers represent less than a sixth of the publishers in the United States. Most books are published by a small number of very large book publishers, but thousands of smaller book publishers exist. Many small- and medium-sized book publishers specialize in a specific area. Additionally, thousands of authors have created publishing companies and self-published their own works. Within book publishing, the publisher of record for a book is the entity in whose name the book’s ISBN is registered. The publisher of record may or may not be the actual publisher.
In 2013, Penguin (owned by Pearson) and Random House (owned by Bertelsmann) merged, narrowing the industry to a handful of big publishers as it adapted to digital media. The merger created the largest consumer book publisher in the world, with a global market share of more than 25 percent. Approximately 60% of English-language books are produced through the “Big Five” publishing houses: Penguin Random House, Hachette, HarperCollins, Simon & Schuster, and Macmillan. In November 2020, ViacomCBS agreed to sell Simon & Schuster, the third largest book publisher in the United States, to Penguin Random House in a deal that will create the first mega publisher. On November 2, 2021, the United States Department of Justice filed a lawsuit (U.S. v. Bertelsmann SE & CO. KGaA, et al.) to block the merger on anti-trust grounds.
Leadstart, Shristi Publisher, Rupa Publications, and Jaico Publishing House are major publishers in India.