Some managers (e.g. KeePass/KeePassX) have a feature where it will clear the copied username and password from the clipboard after an ellapsed period of time (s

Some managers (e.g. KeePass/KeePassX) have a feature where it will clear the copied username and password from the clipboard after an ellapsed period of time (say, 15 seconds). What's great about this feature is that it still preserves the rest of the clipboard history. The best way to avoid losing the vault passphrase is to make it a strong, rememberable password and move the passwords within the vault to randomly generated character strings (where sites permit it, there are a frustratingly large number of sites where certain characters or lengths of passwords simply do not work). That way, you remember only one password. The biggest issue I've encountered with over a year of daily use of a password manager is making sure you can access the password database file consistently. Having the file on Dropbox is no use if your Dropbox password can only be fetched from the password database! So, always always always keep a local copy somewhere just in case.