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数百款App通过超声波信号静默追踪手机用户

数百款App通过超声波信号静默追踪手机用户前言你的智能手机上可能安装了一些app持续监听用户周遭无法听到的高频超声波，借此了解到用户的动向和喜好，而用户对此一无所知。超声波跨设备追踪是一种新技术，目前一些营销人员和广告公司用于跟踪多台设备中用户的动向并访问比之前广告更有针对性的信息。例如，用户...

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更新时间 2024-03-23 14:36:36

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