Registered fax the document to be sent and the resulting multipage image is encapsulated in an electronic envelope file format that allows time stamp insertion as meta data or as a specific tag.<br> - This envelope document is digitally signed using non reversible cryptography elements and the signature is then printed on the last page of the document for facsimile transmission.<br> - The receipt of the fax acknowledgment and subsequent transmission report validates that the content has been delivered in full to the receiver, including the page containing the signature and informing the receiver about the certified nature of the facsimile transmission.<br>
3D Fax the 1.0 version could compress both a 90kB Word document and a 302kB image file to less than 40kB, so the files could each be faxed as a single page. 3D Fax 3D Fax was a computer program for file transfer via fax. The program encoded a file into an image to be sent to the recipient's fax machine. The recipient would then scan the transmitted image and use 3D Fax to decode it back to its original binary form. 3D Fax was developed and marketed in the mid-1990s by a company called InfoImaging Technologies; it ran on Windows. InfoImaging