Another example of the network effect's positive impact on identity management is Google's implementation of strong two-factor authentication for Google Apps.

另一个网络效应为身份管理带来正面影响的例子是Google在Google应用里实施的强双重认证。

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PhoneFactor is one company that is gaining traction with two factor (strong) authentication based on mobile devices.

FORBES: Perhaps Sony should consider strong authentication?

Those innocuous traits led investigators to initially believe the computer access from China using Bob's credentials was unauthorized -- and that some form of malware was sidestepping strong two-factor authentication that included a token RSA key fob under Bob's name.

CNN: STORY HIGHLIGHTS