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What's CSTCloud passport?

CSTCloud passport is the combination of an email address and a password that you use to sign in to services of CSTCloud. If you don't have a CSTCloud passport, you can sign up for free at any time.

• May 2016, CSTNET Passport is upgraded to CSTCloud passport.
• April 2013, Duckling Passport was upgraded to CSTNET Passport.