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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The human face tracking procedure for face recognition to track positioning direction.

说明：本程序为人脸追踪，适合人脸识别追踪定位方向。

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Human face problems consist of four parts: human face detection, human face tracking, human face recognition and the derived analysis of pose and expression.

人脸问题主要包括：人脸检测、人脸跟踪、人脸识别，以及其衍生出来的姿态和表情分析四个应用领域。

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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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