Other uses of passwords A password or passphrase is also used to protect things such as: Encrypted home directories, filesystems, full disks FileVault, EFS, TrueCrypt, LUKS/dm-crypt, eCryptfs, ... Archives (WinZip, RAR, ...) Wireless networks (WiFi WPA-PSK) PGP secret keys Mac OS X keychains, other "password vaults" This will also keep passwords/phrases and decent KDFs relevant for many years to come