Editing Keychain (section)

{{Short description|Device attached to a key or several keys}}
{{About||the cryptography concept|Keyring (cryptography)|mobile phone application|Key Ring (software)|the password management systems|Keychain (Mac OS)|and|GNOME Keyring}}
{{Use dmy dates|date=February 2023}}

[[File:Car Keys.jpg|thumb|Three keys on a keyring with a promotional message]]
A '''keychain''' ({{IPAc-en|audio=En-us-keychain.ogg|ˈ|k|i|t|ʃ|eɪ|n}}) (also '''keyring''') is a small ring or chain of metal to which several [[Key (lock)|key]]s, or fobs can be attached. The terms '''keyring''' and '''keychain''' are often used interchangeably to mean both the individual ring, or a combined unit of a ring and fob.  

The length of a keychain or fob may also allow an item to be used more easily than if connected directly to a keyring. Some keychains allow one or both ends to rotate, keeping the keychain from becoming twisted, while the item is being used.
[[File:Mendel II 081 r.jpg|thumb|Keybearer with a keyring, 1605, from one of the {{interlanguage link|Nürnberger Hausbücher|de}}]]