Starting from the 14th of November 2017 myCloud is enabling customers with valid Swisscom Login credential to login into myCloud without the need to create a new account.
If you are new to myCloud and you already have valid Swisscom Login credentials you can just go to myCloud.ch and Log in here.
If you already have a myCloud account with Passeport, then you will not be able to access this account using your Swisscom login credential. However we are working on it and we will enable this migration in the near future.
For more information about Passeport and Swisscom Login please read here.