当然，目前国外也有一些相对较小的指纹识别系统，比如数码人(Digitalor)公司的U-are-U系统,但他们的产品都存在价格昂贵、应用灵活性差、多使用光学传感器体积较大等问题。
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德克萨斯大学达拉斯分校的帕克和他的同事证明，学习编织或数码摄影可以增强老年人的记忆功能。
Park of the University of Texas at Dallas and colleagues demonstrated that learning to knit or do digital photography enhanced memory function in older adults.
这款名为“播放按钮”的装置源于这样一个现状，即人们已厌倦了CD，却又发现下载数码音乐并不能让人完全满足。
Called the Playbutton, the new device came out of the facts that people were tired with CDs, but finding digital music downloads not entirely satisfying.
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