Electronic keychains including games and small organizers start at a few dollars and can be up to US$50. Other keychain electronics including cameras, digital photo frames, and USB drives cost US$10 to US$100. Souvenir keychains are popular. They represent a trip or a location that a person is visiting. These typically cost between US$1 and US$10. As a collectible item The most popular focused keychain collections are advertising, souvenir, monument, popular characters and nostalgia-related items. Collectors display and store their keychains in several different ways. Some collections are small enough that the collector can place all of their keychains on their standard key ring. Some larger collections can be stored and displayed on dowels, cork boards, tool racks, on large link chains, in display cases, hung on walls, displayed on Christmas trees. Some collections are large enough that entire rooms are dedicated to the keychain collection. According to Guinness World Records, the largest collection of keychains consists of 62,257 items, achieved by Angel Alvarez Cornejo in Sevilla, Spain, as verified on 25 June 2016. His collection began at the age of 7. Due to the tremendous size of his collection he now stores his keychains in his garage and a rented warehouse. The previous record holder was Brent Dixon of Georgia, United States with the largest collection of keychains, at 41,418 non-duplicated ones. Keychains don't hold their value as well as other collections. A standard keychain that was purchased for five dollars new may only be worth less than a dollar once it has been owned regardless of condition. Computer keychains By analogy to the physical object, the terms keychain and keyring are often used for software that stores cryptographic keys. The term keychain was first introduced in a series of IBM developerWorks articles. The term is used in GNU Privacy Guard to store known keys on a keyring. Mac OS X uses a password storage system called Keychain. A "keyring" is also the name of a password manager application working under the GNOME desktop manager (used for example in Ubuntu operating system). In cryptography a keyring is a database of multiple keys or passwords. There are also portable password manager programs, such as Keepass and KeePassX. See also Key finder References External links Domestic implements Locksmithing