Peter,
 
New capabilities are being added to offer an Identity Provider (IdP) for our
IPDX product using
XMPP which will  identify devices and users that are connected to a network.
This capability 
will offer the ability to assure that a device or users is authorized to
participate in a network
and be able to share information with multiple users, devices, and
applications.
 
The following article entitled "Protocol Transformation defense against
cyber-attack" will appear  
in CONTROL magazine in the June 2012 issue.  
 
See latest updates that now includes Android support:
http://www.mact-usa.com.  
 
The newest version will also include changes supported in Window 8 and Apple
IoS due out next month.
 
Protocol transformation eliminates penetration of viruses and can control
read/write access and policy administration on a packet level.   This
capability prevents certain registers from being accessed or changes without
authorization.   This capability is inherent in the approach which does not
require a VPN.  Most significantly the end devices do not have to  include
virus protection even when accessed via the Internet.  All traffic is
secured end-to-end using Transport Layer Security (TLS).   
 
The following is an article in International Cement Review (ICR) May 2012
entitled "XMPP Revisited":
http://www.cemnet.com/Articles/story/149546/xmpp-revisited.html
 
If you have any questions please contact me.  Regards,
 
W.J.MILLER, PRESIDENT, MaCT, (301) 500-9277
ISA100 CNMIG, Chairman
IEEE P1451.1.4 Chairman
ISO/IEC/IEEE 21451-1-4 Liaison
ISO JTC1 WG7 INCITS SN1 US ANSI Representative