The call to GetInputFocus finds the current window identifier for the window in focus.

调用GetInputFocus将为持有焦点的窗口查找当前窗口标识符。

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The schema constraint count(key('ids', .)) = 1 checks the set of all identifiers to be sure that only one has the current value (in other words whether the identifier is unique).

模式将限定 count(key('ids', .) ) = 1 检查所有的标识符，从而确保只有一个包含当前值（换句话说，确定该标识符是否是惟一的）。

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GetSystemId returns the system identifier for the current document event.

getSystemId返回当前文档事件的系统标识。

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The current push for a unique global identifier for each legal entity was sparked by the financial crisis in 2008 when firms and regulators had a hard time tracing the transactions among key players such as Lehman, Bear Stearns, AIG and the portfolios of mortgage-backed securities.

FORBES: LEI -- 20 Characters In Search Of Authority

You see, each person's body provides a different amount of opposition to electrical current, so bioimpedance can be a unique biometric identifier.

ENGADGET: Researchers use bioimpedance as a biometric, let health monitor devices know who you are

As for the current discrepancy, one might speculate that the phone's identifier hasn't yet been blocked on the HTCdev site -- something that'd likely be resolved before the phone becomes officially available through retail channels this Friday.

ENGADGET