A Proactive Password Checker
   Paper by M. Bishop, 1991. The author describes a technique, and a mechanism, to allow users to select passwords which to them are easy to remember but to others would be very difficult to guess. [Postscript]
   http://seclab.cs.ucdavis.edu/papers/mb91c.ps

BioPassword
   A software-based technology that learns and verifies unique typing patterns. Includes an introduction to biometrics and keyboard dynamics.
   http://www.biopassword.com/

Dos and Don'ts of Client Authentication on the Web
   Paper by Kevin Fu, Emil Sit, Kendra Smith, and Nick Feamster. In the Proceedings of the 10th USENIX Security Symposium, Washington, D.C., August 2001. [PDF]
   http://www.pdos.lcs.mit.edu/papers/webauth:sec10.pdf

Finally Software
   Enterprise security solutions based on PKI and Kerberos. Also offer a secure terminal emulator for connecting to Unix servers from Windows. Product information and downloadable evaluation software.
   http://www.finallysoftware.com/

Flicks Software
   Software password protects web content (Windows NT / 2000). Free trial downloads available.
   http://www.flicks.com

I/O Software
   Provider of software solutions, including biometric solutions. Site includes product descriptions and technology licensing terms.
   http://www.iosoftware.com/

IIS User Authentication Tutorial
   Information on various methods for WWW password protection using Internet Information Server (IIS). Text-based tutorial with some screenshots.
   http://www.authenticationtutorial.com/

Intertrust Technologies Corporation
   Develops general purpose digital rights management platform which serves as foundation for providers of digital information, technology and commerce services to participate in a global system for digital commerce. (Nasdaq: ITRU).
   http://www.intertrust.com/

M-Tech Information Technology, Inc.
   ID-Synch, identity management software for managing user administration processes. Product information, customers, press releases and contact details.
   http://mtechit.com/

NMA, Inc.
   ZSentry two-factor authentication solution. Product information, white papers and contact details.
   http://www.nma.com/

Open Systems Management
   Password synchronization and role based access control across UNIX, Windows NT and resident applications. Site contains FAQs.
   http://www.osmcorp.com/

Password Management
   Paper by M. Bishop, 1991. Discusses problems of password selection and password management, and identifies relevant techniques. [PDF]
   http://seclab.cs.ucdavis.edu/papers/pdfs/mb-91.pdf

Pluggable Authentication Modules
   Sun's official PAM documentation. Programmer documentation and source code.
   http://www.sun.com/software/solaris/pam/

Proginet Enterprise Software
   Password synchronization, enterprise-wide access control management and managed file transfer software.
   http://www.proginet.com/

RSA Security
   Products include token-based one time password systems and single sign on systems. Site contains information on security.
   http://www.rsasecurity.com/

Remote User Authentication in Libraries
   Comprehensive collection of resources for libraries and universities. Includes links to software and some links of interest to non-librarians.
   http://library.smc.edu/rpa.htm

SAFLINK
   Offer a range of identity management solutions based on tokens, smartcards and biometrics. Headquarters in Bellevue, WA.
   http://www.saflink.com/

Secure Remote Passwords
   Software integrates into existing networked applications. Secure telnet and FTP available. Open source. User and technical documentation as well as source code.
   http://srp.stanford.edu/

SecureUser.net
   Providers of tools to e-commerce developers. Site includes a technology explanation and case studies.
   http://www.secureuser.net/

Unisys
   Makers of several related products. Site includes rationale as well as comprehensive usage information.
   http://www.unisys.com/

Vasco
   Makers of both software and hardware systems. Demos, case studies and product information.
   http://www.vasco.com/

iDEX Systems, Inc.
   Java-powered iButton based personal identity management security services and digital certificate authentication for secure logon, secure messaging, and digital signatures.
   http://www.idexsys.com

iisPROTECT
   Functions with Internet Information Server to secure web sites. Includes live demo.
   http://www.iisprotect.com/