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)
Internet fax the information is sent directly over the telephone network, not over the Internet. This helps to communicate from remote places to the fax machine's location. In this method, smartphones are used to send and receive fax without the need to have any landline phone or any extra hardware. There are several fax applications (for both Android and iOS) that handle the mobile-based faxing. How does it work? First of all, users must install the fax app on their smartphones and have an active subscription to that online fax service provider. After that, the phone's camera is used as a scanner