Do I need to sign in or create an account?
No.
If you are using a version of Sketchbook is asking you to sign in or create an account, you should upgrade to the latest version. You will no longer be asked to sign in.
Do I need to sign in or create an account?
If you are using a version of Sketchbook is asking you to sign in or create an account, you should upgrade to the latest version. You will no longer be asked to sign in.