The audio signature feature is a breakthrough in document authentication technology. It uses your voice, in a unique context, as the basis for document authentication. With this system, one may uniquely identify a document in a way which is very difficult to copy and in a manner which is very convincing to anyone who needs to verify this digital signature. 

Once users complete your form, they click on a button on the form, which presents a dialog box.  The dialog box contains a customized message for the user, such as the one shown below:

The message contains the user's name, document identification, a date, the time, and a statement of intent to sign this document.  The user records the message in his own voice and presses the STOP button when finished. When the document is saved, the binary data of the recording becomes embedded in the document, and it cannot be removed.  Also, a message on the control indicates that a signature has been made.  From this point on, anyone who seeks to verify this signature may click on the control and press the play button to hear your recording. 

Using this system, users can uniquely identify a document in a way which is very difficult to copy and then a manner which is very convincing to anyone who needs to verify this digital signature.  The system embeds a digital recording of the users voice into the document.  Once embedded,  this signature cannot be removed and the document is encrypted. However, even if this signature could be removed and inserted into an other document, the exercise would be pointless because this signature, or voice recording, identifies the time, the date, the place, and the document itself, which makes the identification useless in another context.