A Screens ID is a user name you can use to sign in with Screens Connect.
Screens Connect is a free service that allows you to easily connect to your Mac or Windows PC while you're away. Reach your computer from the Coffee Shop across the street or from your hotel room in Sydney. Install Screens Connect on your Mac or Windows PC, create a Screens ID and you forget about it. Screens Connect takes care of the rest.
Download Screens Connect. It's free!