Say you want to use some printers via IPP, but these require authentication with a user account. You could use this hint which was published a few days ago, and install the printer directly using an address like this: ipp://account:password@server/printer You could also do this in Tiger by holding the Option key while pressing Add. However, there are two fundamental problems with this approach. First, these printers can be used by every user on the machine, so adding printers like this only makes sense on single-user machines. Second, the account data is written to /etc/cups/printers.conf, i.e. this file contains your password in clear text (this file is only readable by administrators, though). Fortunately, OS X 10.5 actually supports IPP printing with authentication, but Appl...

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