A wooden key fob made in Finland

A key fob is a generally decorative and at times useful item many people often carry with their keys, on a ring or a chain, for ease of tactile identification, to provide a better grip, or to make a personal statement. Key fobs are often called "key rings" or "key chains" in colloquial usage. The word fob may be linked to the low German dialect for the word Fuppe, meaning "pocket." Image File history File linksMetadata Size of this preview: 800 × 600 pixel Image in higher resolution (2816 × 2112 pixel, file size: 2. ... Image File history File linksMetadata Size of this preview: 800 × 600 pixel Image in higher resolution (2816 × 2112 pixel, file size: 2. ... A single key A key is a device which is used to open a lock by turning. ... A keyring is a ring of material, usually metal or plastic, that holds keys and other small items, which are sometimes connected to keychains. ... A key fob is a decorative item which many people carry with their keys, on a ring or a chain, often to provide a better grip or to simply make a personal statement. ...

Fobs vary considerably in size, style and functionality. Most commonly they are simple discs of smooth metal or plastic, typically with a message or symbol such as that of a logo (as with conference tchotchke) or a sign of an important group affiliation. A fob may be symbolic or strictly aesthetic, but it can also be a small tool. Many fobs are small flashlights, compasses, calculators, penknives, discount cards, bottle openers, or USB flash drives. For other uses, see Logo (disambiguation). ... Look up tchotchke in Wiktionary, the free dictionary. ... For the Parliament song, see Flash Light (song). ... Categories: Math stubs | Mathematical tools ... This is a list of types of calculators, many of which are obsolete but hoarded by legions of admiring collectors. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... In marketing generally and in retailing more specificly, a loyalty card, rewards card, points card, or club card is a plastic card, visually similar to a credit card or debit card, that identifies the card holder as a member in a commercial incentives programme. ... Opened Waiters Friend Pocket knife with bottle opener A bottle opener is a device which enables the removal of metal bottle caps from bottles. ... A USB drive, shown with a 24 mm US quarter coin for scale. ...

Electronic key fobs are used for remote keyless entry systems on motor vehicles. Early electric key fobs operated using infrared and required a clear line of sight to function. These could be copied using a programmable remote control. More recent models use challenge-response authentication over radio frequency, so these are harder to copy and do not need line of sight to operate. Programming these remotes sometimes requires the automotive dealership to connect a diagnostic tool, but many of them can be self-programmed by following a sequence of steps in the vehicle and usually requires at least 1 working key. Surface mount electronic components Electronics is the study of the flow of charge through various materials and devices such as semiconductors, resistors, inductors, capacitors, nano-structures and vacuum tubes. ... A remote keyless system is a system designed for automobiles that duplicates all of the features of a standard car key with the added convenience of elimitanting the need to physically manipulate a key into a lock as well as being able to do so at a distance. ... Vehicles are non-living means of transport. ... For other uses, see Infrared (disambiguation). ... When viewing a scene, as in optics, photography, or even hunting, the line of sight is the straight line between the observer and the target. ... For other uses, see Remote control (disambiguation). ... For the spam-filtering technique, see Challenge-response spam filtering. ... It has been suggested that this article or section be merged with Radio waves. ...

Key fobs are increasingly used in apartment buildings and condominium buildings for access to common areas (ie. lobby doors, storage areas, fitness room, pool). These usually contain a passive RFID tag. The fob operates in much the same manner as a proximity card to communicate (via a reader pad) with a central server for the building, which can be programmed to allow access only to those areas in which the tenant or owner is permitted to access, or only within certain time frames. An apartment block (St George Wharf) beside the River Thames at Vauxhall Bridge, London, England An apartment building, block of flats or tenement is a multi-unit dwelling made up of several (generally four or more) apartments (US) or flats (UK). ... This article is about the form of housing. ... An EPC RFID tag used by Wal-Mart Radio-frequency identification (RFID) is an automatic identification method, relying on storing and remotely retrieving data using devices called RFID tags or transponders. ... Proximity card is a generic name for contactless integrated circuit devices used for security access or payment systems. ...

Security tokens from RSA Security designed as key fobs.

Telecommuters may also use an electronic device known as a key fob that provides one part of a three way match to log in over an unsecure network connection to a secure network. This kind of key fob may have a keypad on which the user must enter a PIN into to retrieve an access code, or it could be a display-only device such as a VPN token that algorithmically generates security codes as part of a challenge/response authentication system. Image File history File linksMetadata Download high resolution version (3072x2048, 2098 KB) RSA SecurID Tokens Photo by Mateusz Adamowski, taken with Canon EOS. File links The following pages link to this file: SecurID Metadata This file contains additional information, probably added from the digital camera or scanner used to create... Image File history File linksMetadata Download high resolution version (3072x2048, 2098 KB) RSA SecurID Tokens Photo by Mateusz Adamowski, taken with Canon EOS. File links The following pages link to this file: SecurID Metadata This file contains additional information, probably added from the digital camera or scanner used to create... Several types of security tokens. ... RSA, The Security Division of EMC Corporation (NYSE: EMC), is headquartered in Bedford, Massachusetts, and maintains offices in Ireland, the United Kingdom, Singapore, and Japan. ... ... This page covers security in the sense of protection from hostile action. ... A computer network is an interconnected group of computers. ... PINs are most often used for ATMs but are increasingly used at the Point of sale, especially for debit cards. ... VPN redirects here. ... For the spam-filtering technique, see Challenge-response spam filtering. ...

See also

• Keychain