Mac Tools Repair-Source & Wiring Diagrams uses SingleKey ID as a login and authentication mechanism. You can create a new SingleKey ID or log in with existing credentials. If registering new, you MUST use the same email address as your ELITE Tool is registered to. If you already have an existing SingleKey ID related to your ELITE tool then you can login using the same credentials. SingleKey ID offers one login for many brands. For more information, please visit https://singlekey-id.com