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PrivaFone was incorporated in Texas in 2003 with the purpose of developing cryptographic software that users could download onto their cell phones to secure phone calls.

In 2005 we started working on a PC-based secure VoIP application using sipXtapi as the code base.  This will be a really nice application once we get it finished, and will feature:

  • secure VoIP client using both symmetric and asymmetric encryption

  • Tiger Jet USB/RJ11 adapter will allow an ordinary telephone to be used as a handset

  • cryptographic key length is limited only by computing power

  • keys are securely destroyed after each call

In the future, we will be developing a PBX server that users can upload to any website in the world, as well as porting the PC app to mobile operating systems.  This will afford users the possibility of truly secure, anonymous and covert communication.

The website for this project is

In 2007 we became interested in the area of semen detection kits, and discovered there wasn't a really satisfactory kit on the market.  There were test kits for acid phosphatase (AP), and immunochromatographic tests for prostate specific antigen (PSA) and semenogelin, but these were somewhat expensive and complicated to use.  Therefore, R&D was begun on a dual-component test kit--one that used a simple AP spot test for presumptive evidence of semen as well as a more specific PSA strip test, and that included a generous supply of strips.  In 2008 development was completed and the InSite Semen Detection Kit offered for sale--the world's first dual-action, easy-to-use kit for private investigation of sexual activity.


Dr. Steve Ashburn is President & CEO of PrivaFone.  He earned a B.A. in chemistry & biochemistry from Rice University and a Ph.D. in organic chemistry from the University of Illinois at Urbana-Champaign.  He completed three postdoctoral research fellowships and worked for three different corporations.  He also attended medical school for three years at Saint Louis University. 

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March 19, 2008

PrivaFone Corporation releases its InSite Semen Detection Kit.

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May 15, 2009


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June 25, 2009


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July 21, 2009


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March 23, 2012

U.S. Patent Granted

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©2008 PrivaFone Corporation