The Michigan Department of Public Health informed participants of Apple hearing study that additional data unintentionally collected by the app has been deleted. In addition, the update of the app will prevent the recurrence of the problem. It is understood that Apple will launch this research application in 2019. At the same time, it will launch three health studies, one of which is about hearing health. < / P > < p > the data collected are intended to help researchers understand the link between long-term exposure to sound and its impact on hearing health. The purpose of this study is to collect data only for authorized categories after agreeing to this study. < / P > < p > the reader of Appleinsider, Chris Sprague, told Appleinsider about the mistakes in data collection. The Michigan Department of public health sent an email to Sprague and other study participants informing them of the additional data collection and what measures had been taken to correct the situation. < / P > < p > however, the study inadvertently collected additional data for 30 days, which were not part of the study. This is due to a mistake in the research application, but it has been corrected. < / P > < p > all additional data has now been deleted and not used for research purposes, and has never been accessed by apple. Due to privacy constraints and the lack of recognizable research object tags, as part of the research application function, individual participants cannot be identified. After 12 years, “world class Super project” Shantou Bay Tunnel ushers in a historic breakthrough today

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