Emeritus Membership Plus Print Version of JTD: The Emeritus Membership is a free and honorary membership category. To be eligible for Emeritus Membership, Members must either be 80 years of age or older and have 25 or more years of continuous membership with the ISSTD or be 70 years of age or older and have been awarded ISSTD Fellow Status. Prospective Emeritus Members must be able to demonstrate that they meet requirements and remain in good standing with their current or previous professional regulatory authority/institution/registration body and act in accordance with the Code of Conduct.