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Bottle opener
A bottle opener is a device that enables the removal of metal bottle caps from bottles. More generally, it might be thought to include corkscrews used to remove cork or plastic stoppers from wine bottles. Another name for some types of bottle opener is church key.
A metal bottle cap is affixed to the rim of the neck of a bottle by being pleated or ruffled around the rim. A bottle opener is a specialised lever inserted beneath the pleated metalwork, which uses a point on the bottle cap as a fulcrum on which to pivot
The new MP4 players
MP4 players play, record and store video and music files. With an MP4 portable video player, you can download movie files from your computer to the player and take them with you to watch or listen to at another time. Some can also record TV shows, sports programs and movies directly from a television set, DVD player or cable box. Many can store digital photos from a computer or digital camera. If you want to watch high quality movies with great sound when traveling or at your convenience, this may be just what you need.
Keychains, Basic Fun Key Chains, by Ultimate Key Chain
Keychain is Apple Computer's password management system in Mac OS X and Mac OS 9. It was introduced with Mac OS 8.6. A Keychain can contain various types of data: passwords (Websites, FTP servers, SSH accounts, network shares, wireless networks, groupware applications, encrypted disk images), private keys, certificates and secure notes. The default keychain file is the login keychain, decrypted on login by the user's login password (this can be changed). Keychain files are stored in ~/Library/Keychains/.
Keychains were initially developed for Apple's e-mail system, PowerTalk. Among its many features, PowerTalk incorporated a powerful encryption system for security and digital signatures. The keychain concept naturally "fell out" of this code, and was used in PowerTalk to manage all of a user's various login credentials for the various e-mail systems PowerTalk could connect to. Keychain placed these passwords in an encrypted file, and automatically returned them on command if the file was "opened" using a password.
This offered excellent security not found on other platforms; the passwords were not easily retrievable due to the encryption, yet the simplicity of the interface allowed the user to select a different password for every system without fear of forgetting them, as a single password would open the file and return them all. At the time, this was a truly innovative concept that was not available on other platforms. Keychain was one of the few parts of PowerTalk that was obviously useful "on its own", which suggested it should be promoted to become a part of the basic MacOS. But due to internal politics, it was kept inside the PowerTalk system, and therefore available to very few Mac users.
It was not until the return of Steve Jobs that Keychain was liberated from the now-dead PowerTalk. By this point in time the concept was no longer so unique, but it was still rare to see a Keychain system that was not associated with a particular piece of software, typically a web browser. Keychain became a standard part of OS 9, and was included in OS X in the first commercial versions.
Third party uptake of Keychain has been somewhat spotty to date. Although most Apple software uses it (notably Apple Mail and Safari), and Macintosh-only applications such as Transmit and Camino do as well, cross-platform applications such as Firefox do not use Keychain, sticking to custom cross-platform solutions instead. Many programs continue to store their login credentials in plain text files, although this is becoming rare for newer programs.