Demo page
Technologies:  Risk-dependent scalable,
out-of-band, strong authentication.
Out-of-band (OOB) authentication is widely
accepted as the solution  for Man-in-the-Middle
(MITM)  attack. OOB Authentication requires that
separate information channels  are used for
authentication and access. Both SecurePortalAccess
and Signature&Encryption utilize this approach.
SecurePortalAccess utilizes OOB using proprietary
VoiceShield PC     client-server encrypted
communication channel . For reference   please go
to Controlled Field-test by Standards Institute
VoiceShield exceeds  US NIST Level 4 open network
e-authentication requirements. For discussion
please go to NIST level 4 and beyond.
SecurePortalAccess also  utilizes OOB authentication
using proprietary MobilVoice phone-to-IVR
communication channel. Signature&Encryption  
utilizes OOB authentication using client-server
encrypted  communication channel .
The rationale for risk-dependent scalability for
authentication is the need to balance security and
user convenience. SentryCom uses the following
scalability "ladder":
1. Two-factor authentication.
2. Two-factor "live" authentication.
3. Three-factor authentication.   
1.Two-factor authentication
includes proprietary
combination of hardware/
software IDs and PIN. It is
most convenient for users,
but is susceptible to trojan
& key-logger attack and
should be used only for
low-risk cases.

2.Two-factor live authentication
resolves trojan & key-logger
vulnerability , but is less
convenient and should be
used for moderate-risk.

3.Three-factor authentication
is the most secure, but is
also least convinient and
should be used for high-risk.