The DHS-sponsored domestic Registered Traveler has been an active field for contractors.

DHS主办的国内注册旅客项目对合同商来说已经是一个活跃的领域。

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Eventually, the goal is to recognize comparable programs in other countries so that foreign visitors will be eligible for participation in International Registered Traveler, the notice states.

最终目标是承认其他国家的可比较项目，因此外国游客也将符合条件参与国际注册旅客项目，公告说。

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The big risk is the whim of the government, which could conceivably put the kibosh on the Registered Traveler program at any time--particularly if an approved traveler turns out to be a security risk.

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According to the U.K. border agency, it takes between five to 10 minutes to register for IRIS and a registered traveler entering the U.K. by passing through the IRIS barrier can clear immigration in about 20 seconds.

WSJ: Cutting Down On the To and Fro

Despite the heightened terror alert, the Transportation Security Agency expects the initiative, dubbed the "Registered Traveler" program, to roll out to between 10 and 20 U.S. airports by the end of the year, according to the agency's spokeswoman Amy Kudwa.

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