While advertisers like the face-tracking technology, another privacy advocate, Harley Geiger, questions whether it should be used on consumers without their knowledge.

在广告客户们喜欢面部追踪系统的同时，Harley Geiger，一名隐私捍卫者，质疑在用户不知道的情况下应用该系统是否合理。

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So advertisers expect rigorous information about who sees the spots - information that face tracking can now provide, Ketcham said.

所以广告客户希望的到严谨的统计信息，到底谁看了他们的广告，而这些信息是面部追踪系统能够提供的，Ketcham说。

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Since face tracking and recognition technology could detect object in a certain distance with an ideal accuracy, it gets more attention and application in security fields.

而人脸检测技术由干在一定的正确率下可以远距离检测目标，越来越得到人们的重视。

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Photo manipulation, automatic translation, health sensor integration, even face-tracking were all presented as top innovations for the new device.

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But like any good privacy paranoiac, Kilpatrick can easily imagine how the face-tracking software he sells can be used for less benevolent purposes.

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The foundations of affective computing were laid in the 1990s by MIT professor Rosalind W. Picard, who oversees the lab with the face-tracking demo.

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