A web authentication system.
MIT Touchstone is a suite of technologies for authenticating a variety of web applications. It was introduced at MIT in 2008. It is focused on supporting web applications. It is not suitable for authenticating native desktop applications.
Touchstone is the MIT implementation of the Shibboleth SSO, an open source web single sign on application developed by Internet2. It allows login using various methods, including username and password and MIT certificate, and also allows users in the InCommon Federation or Touchstone Collaboration account to authenticate to a variety of web services securely.