Great article about Single Sign-On for clinitians. The Scan Man marketed the first single sign-on products while I was working for CA (the Computer Associates). The problem single sing-on addresses is multiple logins and multiple passwords for several applications is highly inefficient and expensive. The result is that a person logs in once to their computer and they are automatically logged into all the other software where they are authorized. In this study, the savings is $2,675 per clinitian.
Imprivata is a maker of SSO software for medical personnel http://www.imprivata.com/onesign_platform