I was wondering if it is possible to have a Secure Logout (similar to SAML SLO) with an LTI. Ideally, a user who logs into Canvas to use a provider tool would be automatically logged off from the provider website after logging off the Canvas. In most cases users are not aware that there are sessions open on the provider website and won't log out themselves, leaving the account open for vulnerabilities. Any pointers would be appreciated. It would also help to know if it is not possible at this time.