You only need an account if you want to upload or like resources.
Create an account by clicking the user icon in the top right corner of KeyShot Cloud and click login - On this page you will find an option to register.
If you are not logged in when trying to upload or like you will be asked to login/register before you can proceed.
To log out, click the settings icon in the upper right of KeyShot Cloud window and click Log out.
If you for some reason want to delete your account, just login, click on Account Settings in the dialog click Delete My Account.
When your account is deleted Luxion will delete any information that can be associated with you and resources uploaded by you will be redelegated to a Luxion account.