Single-use (or limited-usage) credentials. The most common approach is to issue credentials that allow the user to log in (“show” the credential) exactly one time. If a user wants to access the website fifty times, then she needs to obtain fifty separate credentials from the Issuer. A hacker can still steal these credentials, but they’ll also be limited to only a bounded number of website accesses. This approach is used by credentials like PrivacyPass, which is used by sites like CloudFlare.
"We can raise it up again after a year to change the batteries. That means we can avoid using divers, which is a really risky operation that we wanted to avoid," he said.。体育直播对此有专业解读
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Syntactically, it’s not quite similar, and it did use braces, for instance, but conceptually, the everything-is-an-object model was very, very similar.
在奋进的春天里以“质”取胜（人民论坛网评）。体育直播对此有专业解读