It is sometimes necessary to control printer ports if printouts are not allowed until a certain time. This might be the case in universities, for example, where the computer room is open in the evenings but where the administrators want to prevent long printouts being made, which use up printer toner and paper. Most access control programs provide some kind of LPT port blocking feature. In most cases, the real problem doesn’t involve controlling the printer ports themselves. The most difficult problem for most users is how to keep control of which users have access to which printers. Printer access in Windows is based on ini files. This should be one of the criteria you use when considering an access control product. These ini files can be used to control which printer, fonts, colors, etc. are available to each user.