subscriber computer the verification and location methods of the first through third embodiments may be implemented 1 by computer software 2 by dedicated hardware or 3 by combinations of software hardware and firmware of the subscriber computer the computer software may run on a windows u00ae 95 or windows u00ae nt u00ae operating system the software preferably runs on a pentium u00ae 133 mhz pc or better with at least 16 mbyte ram and a 1 gbyte hard drive for storage of the large digital objects in addition to the high speed transmission communication device the host computer may be set up with a relational database a graphical user interface and list addressing software and transmission communication software to communicate with the transmission communication device data files are transmitted and received using a packet based broadcast protocol at speeds of over 8 44 mbps in a dedicated computer in addition to the high speed receiver communication card the subscriber computer may be set up with a local database a graphical user interface and receive communication software to communicate with the receiver communication device moreover the packets may be encoded using a computer separate from the host computer in this case the host computer is responsible for transmitting the encoded packets similarly separate computers may be used to receive the transmitted packets and to reconstruct and verify the files and if necessary to locate any erroneous packets thereof.