Spring Security uses a dedicated cookie to implement the remember-me feature: as long as the cookie exists, the remember-me will be detected.

Though, my aim was to brought CAS remember-me feature to Spring Security, there was more work than expected both on the CAS server and CAS client sides. But I think we are going into the right direction. You can read more here: https://jira.spring.io/browse/SEC-1986 & https://github.com/spring-projects/spring-security/pull/14.