A keyring is a ring of material, usually metal or plastic, that holds keys and other small items, which are sometimes connected to keychains.
The most common form of key ring is a metal ring consisting of two complete loops. Either end of the loop can be pried open to allow a key to be inserted and slid along the spiral until it becomes wholly engaged onto the ring. Often the ring is adorned with a key fob making identification easy and possibly also identifying the purpose of the keys.
Other forms of rings may use a single loop of metal or plastic with a mechanism to open and securely close the loop.
In the cryptography sense, a keyring stores known encryption keys. For example, GNU Privacy Guard uses the concept of keyrings.
A key fob is a decorative item many people often carry with their keys, on a ring or a chain, to provide a better grip or to make a personal statement.
Fobs vary in size and style. Most common are simple shapes of smooth metal or plastic, often with a message or symbol. A fob may be strictly symbolic, or it may be functional itself. For examples, many fobs are small flashlights, compasses, calculators, penknives, store discount cards, bottle openers, or USB flash drives.
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.
Key fobs are increasingly used in apartment buildings and condominium buildings for access to common areas (ie. lobby doors, storage areas, fitness room, pool). They 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.
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. The most well-known example of the latter type is RSA's SecurID token.
A keychain or key chain is a small chain, usually made from metal or plastic, that connects a small item to a keyring. The length of a keychain allows an item to be used easier than if connected directly to a keyring. Some keychains allow one or both ends the ability to rotate, keeping the keychain from becoming twisted while the item is being used.
A keychain can also be a connecting link between a keyring and the belt of an individual. It is usually employed by personnel whose job demands frequent use of keys, such as a security guard, prison officer, janitor, or retail store manager. The chain is often retractable, and therefore may be a nylon rope instead of an actual metal chain. The chain ensures that the keys remain attached to the individual using them, makes accidental loss less likely, and saves on wear and tear on the pockets of the user.
A keychain can also be a short chain used to link together a number of keys or other items.
2006-11-18 19:47:20
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answer #1
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answered by Anonymous
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talk about what sort of key ring it is , what it is made of etc,{ my key ring has my nickname on it, made by a lad at school, 41 years ago !!}
2006-11-18 19:08:04
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answer #3
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answered by Weed 6
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not trying to be stupid but wot about the key ring try searching at google.com i find many answers there :)
2006-11-18 18:26:59
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answer #5
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answered by Anonymous
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