Black fax to harass large institutions or government departments, to retaliate against the senders of junk faxes, or merely as simple pranks. The basic principle of a black fax can be extended to form a "black fax attack." In this case, one or more sheets are fed halfway through the sender's fax machine and taped end to end, forming an endless loop that cycles through the machine. Not only can solid black be used, but also images which will repeat endlessly on the receiver's machine until its toner runs out. The introduction of computer-based facsimile systems (combined with integrated document imaging solutions)
4-Sight Fax 4-Sight Fax 4-Sight Fax is a fax server program for Apple Macintosh computer systems, produced by Soft Solutions Inc., USA. Now on its 7th version, the server can handle an unlimited number of users, and may be accessed by a variety of means, including a virtual printer and supplied client software. It can run on Mac OS X and Mac OS 9 systems. The supplied client software allows the server to be configured on a per-user basis, with settings for junk handling, archiving, and receipt confirmation, among other features. It is available in versions for Mac OS X, Mac OS