This allows one or both ends the ability to rotate, keeping the key chain from becoming twisted, while the item is being used. The length of a key chain allows an item to be used more easily than if connected directly to a keying. This 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 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. keyring or "split ring" is a ring that holds keys and other small items, which are connected to keychains. 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.