根据周一发布的研究，运行三星、Vizio 和 Roku 操作系统的智能电视，在用户在设备设置中选择退出追踪后，仍继续向自动内容识别（ACR）端点发送数据。东北大学研究人员的这篇论文指出，一些最大的电视品牌可能存在隐私违规行为。
Smart TVs running operating systems from Samsung, Vizio, and Roku continue sending data to automatic content recognition (ACR) endpoints after users opt out of tracking in the devices’ settings, according to research published on Monday. The paper from Northeastern University researchers points to potential privacy violations from some of the biggest TV brands.
ACR 会捕获智能电视的视频截图或音频片段，并将数据发送到远程服务器，用于衡量内容收视情况和投放定向广告等用途。
ACR captures video screenshots or audio clips from smart TVs and sends the data to remote servers, where it's used for things like measuring content viewership and serving targeted ads.
这篇题为《监视监视者：美国智能电视自动内容识别隐私分析》的论文，检查了 10 家制造商（亚马逊、海信、LG、Roku、三星、索尼、Supersonic、TCL、Vizio 和 Westinghouse）的 12 款智能电视上的 8 种智能电视操作系统，以考察智能电视何时使用 ACR 以及选择退出用户追踪的效果如何。
The paper, "Watching the Watchers: Privacy Analysis of US Smart TV Automatic Content Recognition," examined eight smart TV OSes across 12 smart TVs from 10 manufacturers (Amazon, Hisense, LG, Roku, Samsung, Sony, Supersonic, TCL, Vizio, and Westinghouse) to examine when smart TVs use ACR and how effective opting out of user tracking is.